Last data update: Jul 01, 2024. (Total: 47134 publications since 2009)
Records 1-25 (of 25 Records) |
Query Trace: Chou CF [original query] |
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Self-reported oral health status among adults age 40+ years with and without vision impairment: National Health Interview Survey, 2008
Crews JE , Chou CF , Naavaal S , Griffin S , Saaddine JB . Am J Ophthalmol 2019 210 184-191 PURPOSE: To examine self-reported oral health among adults age 40 years and older with and without vision impairment. DESIGN: Cross-sectional with a nationally representative sample. METHODS: We used publicly available data from the Oral Health Module, last administered in 2008 of the National Health Interview Survey. Outcome variables included fair/poor oral health status, mouth condition compared to others the same age, mouth problems (mouth sores, difficulty eating, dry mouth, bad breath and/or jaw pain), teeth problems (toothache; broken/missing fillings or teeth; loose, crooked or stained teeth; and/or bleeding gums) and lack of social participation. Using descriptive statistics and multivariate logistic regression, we examined the association (p<0.05) between vision impairment and oral health outcomes by age-group, sociodemographic, and other explanatory variables. RESULTS: Our study sample included 12,090 adults; 12.8% of adults aged 40-64 years reported vision impairment, and among them, 44.5% reported fair/poor oral health status and 47.2% reported any mouth problems. Among adults aged >/=65 years, 17.3% reported vision impairment, of whom 36.3% reported fair/poor oral health status, and 57.3 reported any mouth problems. There is a strong association between vision impairment and poorer oral health of adults; adults aged 40-64 years with vision impairment reported 90% to 150% greater odds of oral health problems, including fair/poor oral health status, mouth problems, and teeth problems, compared to people without vision impairment. CONCLUSIONS: Oral health disparities exist between adults with and without vision impairment. Targeted interventions are required to improve oral health in this vulnerable population. |
Prevalence of diabetic retinopathy and associated mortality among diabetic adults with and without chronic kidney disease
Pavkov ME , Harding JL , Chou CF , Saaddine JB . Am J Ophthalmol 2019 198 200-208 Purpose: To estimate prevalence and severity of diabetic retinopathy (DR) among U.S. adults with diabetes and with or without chronic kidney disease (CKD), and assess associated risk of mortality. Design(s): Cross-sectional study with national survey data. Method(s): The cohort included adults >=40 years old with diabetes in the National Health and Nutrition Examination Surveys (NHANES) 2005-2008. Vital status was determined through December 31, 2011. We defined diabetes as hemoglobin A1c >=6.5% or self-report and CKD by urinary albumin/creatinine >=30 mg/g or glomerular filtration rate <60 mL/min/1.73 m2. The main outcomes were DR and mortality. Result(s): Prevalence of DR was 27.8% (95% CI 24.3-31.7), 36.2% (95%CI 30.1-42.7), and 23.4% (95% CI 19.2-28.1), overall, with and without CKD. Prevalence of vision-threatening DR was 4.2% (95% CI 3.2-5.5), 8.2% (95% CI 5.4-12.2), and 2.0% (95% CI 1.2-3.5), respectively. In a multivariable adjusted model, DR was positively but nonsignificantly associated with CKD (OR = 1.1, 95% CI 0.7-1.7), was 40% higher per 1% increase in hemoglobin A1c (OR = 1.4, 95% CI 1.1-1.6), was 30% higher per 5 years additional diabetes duration (OR = 1.3, 95% CI 1.1-1.5), was 30% higher per 10 mm Hg increase in systolic blood pressure (OR = 1.3, 95% CI 1.1-1.5), and was 6-fold higher with insulin treatment (OR = 6.2, 95% CI 2.6-14.8). Compared with diabetic participants with neither DR nor CKD, those with DR and CKD had a 3.6-fold (95% CI 1.5-9.1) increased adjusted risk for all-cause mortality. Conclusion(s): Over one third of persons with diabetes and CKD had DR. The risk of death was higher with than without CKD and DR. Many of the studied risk factors associated with DR are modifiable. |
Early age-related macular degeneration with cardiovascular and renal comorbidities: An analysis of the National Health and Nutrition Examination Survey, 2005-2008
Cheng Q , Saaddine JB , Klein R , Rothenberg R , Chou CF , Il'yasova D . Ophthalmic Epidemiol 2017 24 (6) 1-7 PURPOSE: A cross sectional study was designed to examine the relationship of early age-related macular degeneration (AMD) with comorbidities of cardiovascular and renal conditions in the representative population using National Health and Nutrition Examination Survey (NHANES), 2005-2008. METHODS: Participants (≥40 years) who underwent retinal photography were included. Early AMD was defined by the retinal digital images. The comorbidities were self-reported stroke and heart disease (HD), including angina pectoris (AP), coronary heart disease (CHD), congestive heart failure (CHF), and myocardial infarction (MI). Chronic kidney disease (CKD) was determined based on self-report, estimation of glomerular filtration rate (GFR), or the level of urine albumin. RESULTS: The age-adjusted odds ratio (OR) and 95% CI for having early AMD for persons with the selected conditions were: 2.6 (1.9, 3.6) for any type of HD. When the conditions were considered separately, ORs (95% CIs) were: 2.0 (1.2, 3.4) for AP; 2.5 (1.6, 3.8) for CHD; 2.4 (1.6, 3.6) for MI; 2.3 (1.3, 3.9) for CHF; 3.3 (2.2, 5.0) for stroke; and 2.4 (1.8, 3.2) for CKD. Covariable-adjusted ORs (AOR) were attenuated for all examined conditions, but remained statistically significant. Having any single condition (AOR [95%CI]: 2.7 [1.5, 4.8]) was significantly associated with early AMD, as was having ≥ 2 conditions (AOR [95%CI]: 5.2 [3.0, 9.0]). The strongest association was between early AMD and the combination of HD and stroke (AOR [95% CI]: 6.3 [2.9, 13.8]). CONCLUSION: Cardiovascular and renal comorbidities are associated with early AMD in a representative sample of the US general population. |
The prevalence of chronic conditions and poor health among people with and without vision impairment, aged ≥ 65 years, 2010-2014
Crews JE , Chou CF , Sekar S , Saaddine JB . Am J Ophthalmol 2017 182 18-30 PURPOSE: To examine the prevalence of 13 chronic conditions and fair/poor health among people aged ≥65 years in the U.S. with and without vision impairment. DESIGN: Cross-sectional study from the 2010-2014 National Health Interview Survey METHODS: We examined hypertension, heart disease, high cholesterol, stroke, arthritis, asthma, chronic obstructive pulmonary disease, cancer, weak/failing kidneys, diabetes, hepatitis, depression, and hearing impairment. We used logistic regression to show the association between vision impairment and chronic conditions and the association between vision impairment and poor health for those with chronic conditions. RESULTS: People aged ≥65 years with vision impairment reported greater prevalence of chronic conditions compared to people without vision impairment. After controlling for covariates (age, sex, education, race, smoking, physical activity, and obesity), people with vision impairment were more likely than those without to report chronic conditions (hypertension: OR [odds ratio] 1.43; heart disease: OR 1.68; high cholesterol: OR 1.26; stroke: OR 1.99; arthritis; OR 1.71; asthma: OR 1.56; COPD: OR 1.65; cancer: OR 1.23; weak/failing kidneys: OR 2.29; diabetes: OR 1.56; hepatitis: OR 1.30; depression: OR 1.47; hearing impairment: OR 1.91) (all P<0.05). Among older people with chronic conditions, those with vision impairment and chronic conditions compared to people without vision impairment and chronic conditions were 1.66 to 2.98 times more likely to have fair/poor health than those without vision impairment (all p<0.05). CONCLUSION: Higher prevalence of chronic conditions is strongly associated with vision impairment among the older people and poor health is strongly associated with vision impairment and chronic conditions. |
Disparities in the prevalence of diagnosed diabetes - United States, 1999-2002 and 2011-2014
Beckles GL , Chou CF . MMWR Morb Mortal Wkly Rep 2016 65 (45) 1265-1269 The prevalence of diabetes mellitus has increased rapidly in the United States since the mid-1990s. By 2014, an estimated 29.1 million persons, or 9.3% of the total population, had received a diagnosis of diabetes. Recent evidence indicates that the prevalence of diagnosed diabetes among non-Hispanic black (black), Hispanic, and poorly educated adults continues to increase but has leveled off among non-Hispanic whites (whites) and persons with higher education. During 2004-2010, CDC reported marked racial/ethnic and socioeconomic position disparities in diabetes prevalence and increases in the magnitude of these disparities over time. However, the magnitude and extent of temporal change in socioeconomic position disparities in diagnosed diabetes among racial/ethnic populations are unknown. CDC used data from the National Health Interview Survey (NHIS) for the periods 1999-2002 and 2011-2014 to assess the magnitude of and change in socioeconomic position disparities in the age-standardized prevalence of diagnosed diabetes in the overall population and among blacks, whites, and Hispanics. During each period, significant socioeconomic position disparities existed in the overall population and among the assessed racial/ethnic populations. Disparities in prevalence increased with increasing socioeconomic disadvantage and widened over time among Hispanics and whites but not among blacks. The persistent widening of the socioeconomic position gap in prevalence suggests that interventions to reduce the risk for diabetes might have a different impact according to socioeconomic position. |
Association between county-level characteristics and eye care use by us adults in 22 states after accounting for individual-level characteristics using a conceptual framework
Chou CF , Beckles GL , Cheng YJ , Saaddine JB . JAMA Ophthalmol 2016 134 (10) 1158-1167 Importance: Individual-level characteristics are associated with eye care use. The influence of contextual factors on vision and eye health, as well as health behavior, is unknown. Objective: To examine the association between county-level characteristics and eye care use after accounting for individual-level characteristics using a conceptual framework. Design, Setting, and Participants: This investigation was a cross-sectional study of respondents 40 years and older participating in the Behavioral Risk Factor Surveillance System surveys between 2006 and 2010 from 22 states that used the Visual Impairment and Access to Eye Care module. Multilevel regressions were used to examine the association between county-level characteristics and eye care use after adjusting for individual-level characteristics (age, sex, race/ethnicity, educational attainment, annual household income, employment status, health care insurance coverage, eye care insurance coverage, personal established physician, poor vision or eye health, and diabetes status). Data analysis was performed from March 23, 2014, to June 7, 2016. Main Outcomes and Measures: Eye care visit and receipt of a dilated eye examination in the past year. Results: Among 117295 respondents who resided in 828 counties, individual-level data were obtained from the Behavioral Risk Factor Surveillance System surveys. All county-level variables were aggregated at the county level from the Behavioral Risk Factor Surveillance System surveys except for a high geographic density of eye care professionals, which was obtained from the 2010 Area Health Resource File. After controlling for individual-level characteristics, the odds of reporting an eye care visit in the past year were significantly higher among people living in counties with high percentages of black individuals (adjusted odds ratio [aOR], 1.12; 95% CI, 1.01-1.24; P = .04) or low-income households (aOR, 1.12; 95% CI, 1.00-1.25; P = .045) or with a high density of eye care professionals (aOR, 1.18; 95% CI, 1.07-1.29; P < .001) than among those living in counties with the lowest tertile of each county-level characteristic. The odds of reporting receipt of a dilated eye examination in the past year were also higher among people living in counties with the highest percentages of black individuals (aOR, 1.20; 95% CI, 1.07-1.34; P = .002) or low-income households (aOR, 1.17; 95% CI, 1.04-1.32; P = .01). However, the odds of reported receipt of a dilated eye examination in the past year were lower in counties with the highest percentages of people with poor vision and eye health compared with counties with lower percentages (aOR, 0.85; 95% CI, 0.77-0.94; P = .002). Conclusions and Relevance: Contextual factors, measured at the county level, were associated with eye care use independent of individual-level characteristics. The findings suggest that, while individual characteristics influence health care use, it is also important to address contextual factors to improve eye care use and ultimately vision health. |
The association of health-related quality of life with severity of visual impairment among people aged 40-64 years: Findings from the 2006-2010 Behavioral Risk Factor Surveillance System
Crews JE , Chou CF , Zack MM , Zhang X , Bullard KM , Morse AR , Saaddine JB . Ophthalmic Epidemiol 2016 23 (3) 145-53 PURPOSE: To examine the association of health-related quality of life (HRQoL) with severity of visual impairment among people aged 40-64 years. METHODS: We used cross-sectional data from the 2006-2010 Behavioral Risk Factor Surveillance System to examine six measures of HRQoL: self-reported health, physically unhealthy days, mentally unhealthy days, activity limitation days, life satisfaction, and disability. Visual impairment was categorized as no, a little, or moderate/severe. We examined the association between visual impairment and HRQoL using logistic regression accounting for the survey's complex design. RESULTS: Overall, 23.0% of the participants reported a little difficult seeing, while 16.8% reported moderate/severe difficulty seeing. People aged 40-64 years with moderate/severe visual impairment had more frequent (≥14) physically unhealthy days, mentally unhealthy days, and activity limitation days in the last 30 days, as well as greater life dissatisfaction, greater disability, and poorer health compared to people reporting no or a little visual impairment. After controlling for covariates (age, sex, marital status, race/ethnicity, education, income, state, year, health insurance, heart disease, stroke, heart attack, body mass index, leisure-time activity, smoking, and medical care costs), and compared to people with no visual impairment, those with moderate/severe visual impairment were more likely to have fair/poor health (odds ratio, OR, 2.01, 95% confidence interval, CI, 1.82-2.23), life dissatisfaction (OR 2.06, 95% CI 1.80-2.35), disability (OR 1.95, 95% CI 1.80-2.13), and frequent physically unhealthy days (OR 1.69, 95% CI 1.52-1.88), mentally unhealthy days (OR 1.84, 95% CI 1.66-2.05), and activity limitation days (OR 1.94, 95% CI 1.71-2.20; all p < 0.0001). CONCLUSION: Poor HRQoL was strongly associated with moderate/severe visual impairment among people aged 40-64 years. |
Falls among persons aged ≥65 years with and without severe vision impairment - United States, 2014
Crews JE , Chou CF , Stevens JA , Saaddine JB . MMWR Morb Mortal Wkly Rep 2016 65 (17) 433-7 In 2014, an estimated 2.8 million persons aged ≥65 years in the United States reported severe vision impairment defined as being blind or having severe difficulty seeing, even with eyeglasses. Good vision is important for maintaining balance as well as for identifying low-contrast hazards, estimating distances, and discerning spatial relationships. Conversely, having poor vision increases the risk for falls (1,2). Falls among older adults are common and can cause serious injuries, disabilities, and premature death (1,3). To date, no state-level investigations have examined the annual prevalence of falls among persons with and without severe vision impairment. CDC analyzed data from the 2014 Behavioral Risk Factor Surveillance System (BRFSS) to estimate the state-specific annual prevalence of falls among persons aged ≥65 years with and without self-reported severe vision impairment. Overall, 46.7% of persons with, and 27.7% of older adults without, self-reported severe vision impairment reported having fallen during the previous year. The state-specific annual prevalence of falls among persons aged ≥65 years with severe vision impairment ranged from 30.8% (Hawaii) to 59.1% (California). In contrast, the prevalence of falls among persons aged ≥65 years without severe vision impairment ranged from 20.4% (Hawaii) to 32.4% (Alaska). Developing fall-prevention interventions intended for persons with severe vision impairment will help states manage the impact of vision impairment and falls on health care resources, and can inform state-specific fall prevention initiatives. |
Association of socioeconomic status with eye health among women with and without diabetes
Norris KL , Beckles GL , Chou CF , Zhang X , Saaddine J . J Womens Health (Larchmt) 2015 25 (3) 321-6 OBJECTIVE: To investigate the association between socioeconomic position (SEP) and poor eye health among women. MATERIALS AND METHODS: We included the 7,708 women aged ≥40 years who participated in the 2008 National Health Interview Survey. We defined poor eye health as self-reported age-related eye diseases (AREDs; cataract, glaucoma, macular degeneration, or diabetic retinopathy) or visual impairment (VI). We identified diagnosed diabetes by self-report. We measured SEP by education attained and annual household income. We conducted logistic regression analyses while controlling for demographic, clinical, behavioral, and healthcare access variables. RESULTS: The age-standardized prevalence of VI and ARED was significantly higher among women with diagnosed diabetes than among those without diagnosed diabetes, 29.8% versus 14.4% and 34.1% versus 20.8%, respectively (p < 0.05 for both). The prevalence of VI and ARED increased with decreasing SEP, but the trends were only significant among women without diabetes. After multivariable adjustment, education and income were significantly associated with VI but not with ARED. We found no interaction with diagnosed diabetes. CONCLUSIONS: SEP was inversely associated with VI but not with ARED. We found no interaction with diagnosed diabetes. |
Utilization of e-health services among U.S. adults with diabetes
Chou CF , Bullard KM , Saaddine JB , Devlin HM , Crews J , Imperatore G , McDivitt J , Albright A . Diabetes Care 2015 38 (12) e200-1 Electronic health (e-health) services have become increasingly important as a method to improve access to health care, including online renewal of prescription medications and making appointments. Healthy People 2020 includes objectives related to e-health to improve population health outcomes and to reduce health disparities, particularly to improve shared decision-making processes between patients and health care professionals (1). E-health services have been encouraged as part of the strategy to improve diabetes care and prevention (2,3). The adoption of these services among health care professionals has improved the quality and efficiency of care (4). However, e-health services may be underutilized among patients with diabetes. While research related to e-health services has been conducted in clinical and managed care settings (5), there are no national population estimates or trends for the utilization of e-health services among U.S. adults with diabetes. | We analyzed the 2009–2013 National Health Interview Survey (NHIS) (12,689 respondents aged ≥18 years with diabetes) self-reported data. NHIS is a cross-sectional household survey, using a multistage area probability design of the U.S. noninstitutionalized civilian population. NHIS is the first nationally representative household survey to include questions on the use of health information technology. Utilization of e-health services was defined as scheduling appointments, communicating with health care providers, and refilling prescription medications online. We calculated the predictive margins for the estimates of e-health utilization from multivariate logistic regression, controlling for age, sex, race/ethnicity, educational attainment, poverty-to-income ratio, health insurance coverage, having at least one visit to a doctor or health care professional in the past year, self-rated health status, history of other chronic diseases, diabetes duration, and diabetes medication. We used SAS-Callable SUDAAN 10.0.1 software to account for the complex sampling design of the NHIS. Differences were considered statistically significant at P values < 0.05. |
Association of socioeconomic position with sensory impairment among US working-aged adults
Chou CF , Beckles GL , Zhang X , Saaddine JB . Am J Public Health 2015 105 (6) e1-e7 OBJECTIVES: We examined the relationship between socioeconomic position (SEP) and sensory impairment. METHODS: We used data from the 2007 to 2010 National Health Interview Surveys (n = 69 845 adults). Multivariable logistic regressions estimated odds ratios (ORs) for associations of educational attainment, occupational class, and poverty-income ratio with impaired vision or hearing. RESULTS: Nearly 20% of respondents reported sensory impairment. Each SEP indicator was negatively associated with sensory impairment. Adjusted odds of vision impairment were significantly higher for farm workers (OR = 1.41; 95% confidence interval [CI] = 1.01, 2.02), people with some college (OR = 1.29; 95% CI = 1.16, 1.44) or less than a high school diploma (OR = 1.36; 95% CI = 1.19, 1.55), and people from poor (OR = 1.35; 95% CI = 1.20, 1.52), low-income (OR = 1.28; 95% CI = 1.14, 1.43), or middle-income (OR = 1.19; 95% CI = 1.07, 1.31) families than for the highest-SEP group. Odds of hearing impairment were significantly higher for people with some college or less education than for those with a college degree or more; for service groups, farmers, and blue-collar workers than for white-collar workers; and for people in poor families. CONCLUSIONS: More research is needed to understand the SEP-sensory impairment association. |
Dilated eye examination screening guideline compliance among patients with diabetes without a diabetic retinopathy diagnosis: the role of geographic access
Lee DJ , Kumar N , Feuer WJ , Chou CF , Rosa PR , Schiffman JC , Morante A , Aldahan A , Staropoli P , Fernandez CA , Tannenbaum SL , Lam BL . BMJ Open Diabetes Res Care 2014 2 (1) e000031 OBJECTIVE: To estimate the prevalence of, and factors associated with, dilated eye examination guideline compliance among patients with diabetes mellitus (DM), but without diabetic retinopathy. RESEARCH DESIGN AND METHODS: Utilizing the computerized billing records database, we identified patients with International Classification of Diseases (ICD)-9 diagnoses of DM, but without any ocular diagnoses. The available medical records of patients in 2007-2008 were reviewed for demographic and ocular information, including visits through 2010 (n=200). Patients were considered guideline compliant if they returned at least every 15 months for screening. Participant street addresses were assigned latitude and longitude coordinates to assess their neighborhood socioeconomic status (using the 2000 US census data), distance to the screening facility, and public transportation access. Patients not compliant, based on the medical record review, were contacted by phone or mail and asked to complete a follow-up survey to determine if screening took place at other locations. RESULTS: The overall screening compliance rate was 31%. Patient sociodemographic characteristics, insurance status, and neighborhood socioeconomic measures were not significantly associated with compliance. However, in separate multivariable logistic regression models, those living eight or more miles from the screening facility were significantly less likely to be compliant relative to those living within eight miles (OR=0.36 (95% CI 0.14 to 0.86)), while public transit access quality was positively associated with screening compliance (1.34 (1.07 to 1.68)). CONCLUSIONS: Less than one-third of patients returned for diabetic retinopathy screening at least every 15 months, with transportation challenges associated with noncompliance. Our results suggest that reducing transportation barriers or utilizing community-based screening strategies may improve compliance. |
Health-related quality of life among people aged ≥65 years with self-reported visual impairment: findings from the 2006-2010 Behavioral Risk Factor Surveillance System
Crews JE , Chou CF , Zhang X , Zack MM , Saaddine JB . Ophthalmic Epidemiol 2014 21 (5) 1-10 PURPOSE: To examine the association between health-related quality of life (HRQoL) and visual impairment among people aged ≥65 years. METHODS: We used cross-sectional data from the 2006-2010 Behavioral Risk Factor Surveillance System to examine six HRQoL measures: self-reported health, physically unhealthy days, mentally unhealthy days, activity limitation days, life satisfaction, and disability. Visual impairment was categorized as no, a little, and moderate/severe. We examined the association between self-reported visual impairment and HRQoL using logistic regression accounting for the survey's complex design. RESULTS: People with self-reported moderate/severe visual impairment had more frequent (≥14) physically unhealthy days, mentally unhealthy days, and activity limitation days in the last 30 days compared to those reporting a little or no visual impairment. After controlling for all covariates (age, sex, marital status, race/ethnicity, education, income, diabetes, heart disease, stroke, heart attack, body mass index, leisure time activity, smoking, and medical care cost concerns) and comparing to those with no self-reported visual impairment, people reporting a little visual impairment were more likely to have fair/poor health (odds ratio, OR, 1.2, 95% confidence interval, CI, 1.1-1.3), life dissatisfaction (OR 1.6, 95% CI 1.3-2.0), and disability (OR 1.5, 95% CI 1.3-1.6), and those with self-reported moderate/severe visual impairment had more fair/poor health (OR 1.8, 95% CI 1.6-2.0), life dissatisfaction (OR 2.3, 95% CI 1.8-2.9), and disability (OR 2.0, 95% CI 1.8-2.2). They also had more frequent physically unhealthy days (OR 1.9, 95% CI 1.7-2.1), mentally unhealthy days (OR 1.8, 95% CI 1.5-2.1), and activity limitations days (OR 1.9, 95% CI 1.6-2.2). CONCLUSION: Poor HRQoL is strongly associated with the severity of self-reported visual impairment among people aged ≥65 years. |
Barriers to eye care among people aged 40 years and older with diagnosed diabetes, 2006-2010
Chou CF , Sherrod CE , Zhang X , Barker LE , Bullard KM , Crews JE , Saaddine JB . Diabetes Care 2014 37 (1) 180-8 OBJECTIVE: We examine barriers to receiving recommended eye care among people aged ≥40 years with diagnosed diabetes. RESEARCH DESIGN AND METHODS: We analyzed 2006-2010 Behavioral Risk Factor Surveillance System data from 22 states (n = 27,699). Respondents who had not sought eye care in the preceding 12 months were asked the main reason why. We categorized the reasons as cost/lack of insurance, no need, no eye doctor/travel/appointment, and other (meaning everything else). We used multinomial logistic regression to control for race/ethnicity, education, income, and other selected covariates. RESULTS: Among adults with diagnosed diabetes, nonadherence to the recommended annual eye examinations was 23.5%. The most commonly reported reasons for not receiving eye care in the preceding 12 months were "no need" and "cost or lack of insurance" (39.7 and 32.3%, respectively). Other reasons were "no eye doctor," "no transportation" or "could not get appointment" (6.4%), and "other" (21.5%). After controlling for covariates, adults aged 40-64 years were more likely than those aged ≥65 years (relative risk ratio [RRR] = 2.79; 95% CI 2.01-3.89) and women were more likely than men (RRR = 2.33; 95% CI 1.75-3.14) to report "cost or lack of insurance" as their main reason. However, people aged 40-64 years were less likely than those aged ≥65 years to report "no need" (RRR = 0.51; 95% CI 0.39-0.67) as their main reason. CONCLUSIONS: Addressing concerns about "cost or lack of insurance" for adults under 65 years and "no perceived need" among those 65 years and older could help improve eye care service utilization among people with diabetes. |
Diabetes - United States, 2006 and 2010
Beckles GL , Chou CF . MMWR Suppl 2013 62 (3) 99-104 In 2011, an estimated 26 million persons aged ≥20 years (11.3% of the U.S. population) had diabetes. Both the prevalence and incidence of diabetes have increased rapidly since the mid-1990s, with minority racial/ethnic groups and socioeconomically disadvantaged groups experiencing the steepest increases and most substantial effects from the disease. |
Age-related eye diseases and visual impairment among U.S. adults
Chou CF , Cotch MF , Vitale S , Zhang X , Klein R , Friedman DS , Klein BE , Saaddine JB . Am J Prev Med 2013 45 (1) 29-35 BACKGROUND: Visual impairment is a common health-related disability in the U.S. The association between clinical measurements of age-related eye diseases and visual impairment in data from a national survey has not been reported. PURPOSE: To examine common eye conditions and other correlates associated with visual impairment in the U.S. METHODS: Data from the 2005-2008 National Health and Nutrition Examination Survey of 5222 Americans aged ≥40 years were analyzed in 2012 for visual impairment (presenting distance visual acuity worse than 20/40 in the better-seeing eye), and visual impairment not due to refractive error (distance visual acuity worse than 20/40 after refraction). Diabetic retinopathy (DR) and age-related macular degeneration (AMD) were assessed from retinal fundus images; glaucoma was assessed from two successive frequency-doubling tests and a cup-to-disc ratio measurement. RESULTS: Prevalence of visual impairment and of visual impairment not due to refractive error was 7.5% (95% CI=6.9%, 8.1%) and 2.0% (1.7%, 2.3%), respectively. The prevalence of visual impairment not due to refractive error was significantly higher among people with AMD (2.2%) compared to those without AMD (0.8%), or with DR (3.5%) compared to those without DR (1.2%). Independent predictive factors of visual impairment not due to refractive error were AMD (OR=4.52, 95% CI=2.50, 8.17); increasing age (OR=1.09 per year, 95% CI=1.06, 1.13); and less than a high school education (OR=2.99, 95% CI=1.18, 7.55). CONCLUSIONS: Visual impairment is a public health problem in the U.S. Visual impairment in two thirds of adults could be eliminated with refractive correction. Screening of the older population may identify adults at increased risk of visual impairment due to eye diseases. |
Prevalence of nonrefractive visual impairment in US adults and associated risk factors, 1999-2002 and 2005-2008
Ko F , Vitale S , Chou CF , Cotch MF , Saaddine J , Friedman DS . JAMA 2012 308 (22) 2361-8 CONTEXT: Over the past decade, chronic illnesses with ophthalmic sequelae such as diabetes and diabetic retinopathy have increased. OBJECTIVES: To estimate prevalence of nonrefractive visual impairment and to describe its relationship with demographic and systemic risk factors including diagnosed diabetes. DESIGN, SETTING, AND PARTICIPANTS: The National Health and Nutrition Examination Survey (NHANES) examined a representative sample of the US noninstitutionalized population. In 1999-2002 and 2005-2008, 9471 and 10,480 participants aged 20 years or older received questionnaires, laboratory tests, and physical examinations. Visual acuity of less than 20/40 aided by autorefractor was classified as nonrefractive visual impairment. MAIN OUTCOME MEASURE: Nonrefractive visual impairment. RESULTS: Weighted prevalence of nonrefractive visual impairment increased 21% among US adults aged 20 years and older from 1.4% in 1999-2002 to 1.7% in 2005-2008 (P = .03); and increased 40% among non-Hispanic whites aged 20-39 years from 0.5% to 0.7% (P = .008). In multivariable analyses, statistically significant risk factors for nonrefractive visual impairment in 1999-2002 included age (per year odds ratio [OR], 1.07; 95% CI, 1.05-1.09), poverty (OR, 2.18; 95% CI, 1.31-3.64), lack of insurance (OR, 1.85; 95% CI, 1.16-2.95), and diabetes with 10 or more years since diagnosis (OR, 1.93; 95% CI, 1.15-3.25). In 2005-2008, risk factors included age (OR, 1.05; 95% CI, 1.04-1.07), poverty (OR, 2.23; 95% CI, 1.55-3.22), education less than high school (OR, 2.11; 95% CI, 1.54-2.90), and diabetes with 10 or more years since diagnosis (OR, 2.67; 95% CI, 1.64-4.37). Prevalence of diabetes with 10 or more years since diagnosis increased 22% overall from 2.8% to 3.6% (P = .02); and 133% among non-Hispanic whites aged 20-39 years from 0.3% to 0.7% (P < .001). CONCLUSION: Prevalence of nonrefractive visual impairment was significantly higher in 2005-2008 than in 1999-2002 and may be attributable, in part, to higher prevalence of diabetes, an associated risk factor that increased in prevalence during this time period. |
Use of electronic health records and administrative data for public health surveillance of eye health and vision-related conditions in the United States
Elliott AF , Davidson A , Lum F , Chiang MF , Saaddine JB , Zhang X , Crews JE , Chou CF . Am J Ophthalmol 2012 154 S63-70 PURPOSE: To discuss the current trend toward greater use of electronic health records and how these records could enhance public health surveillance of eye health and vision-related conditions. DESIGN: Perspective, comparing systems. METHODS: We describe 3 currently available sources of electronic health data (Kaiser Permanente, the Veterans Health Administration, and the Centers for Medicare & Medicaid Services) and how these sources can contribute to a comprehensive vision and eye health surveillance system. RESULTS: Each of the 3 sources of electronic health data can contribute meaningfully to a comprehensive vision and eye health surveillance system, but none currently provide all the information required. The use of electronic health records for vision and eye health surveillance has both advantages and disadvantages. CONCLUSIONS: Electronic health records may provide additional information needed to create a comprehensive vision and eye health surveillance system. Recommendations for incorporating electronic health records into such a system are presented. |
The variability of vision loss assessment in federally sponsored surveys: seeking conceptual clarity and comparability
Crews JE , Lollar DJ , Kemper AR , Lee LM , Owsley C , Zhang X , Elliott AF , Chou CF , Saaddine JB . Am J Ophthalmol 2012 154 S31-S44 e1 PURPOSE: To review U.S. national population-based surveys to evaluate comparability and conceptual clarity of vision measures. DESIGN: Perspective. METHODS: The vision questions in 12 surveys were mapped to the World Health Organization's International Classification of Functioning, Disability and Health framework under the domains of condition, impairment, activity limitation, participation, and environment. Surveys examined include the National Health Interview Survey, the Behavioral Risk Factor Surveillance Survey, National Health and Nutrition Examination Survey, the Census, and the Visual Function Questionnaire. RESULTS: Nearly 100 vision measures were identified in 12 surveys. These surveys provided no consistent measure of vision or vision impairment. Survey questions asked about differing characteristics of vision-related disease, function, and social roles. A question related to ability to read newspaper print was the most commonly asked question in surveys. CONCLUSIONS: Limited comparability of data and lack of conceptual clarity in the population-based surveys resulted in an inability to consistently characterize the population of people experiencing vision impairment. Consequently, vision surveillance was limited. |
Vision health disparities in the United States by race/ethnicity, education, and economic status: findings from two nationally representative surveys
Zhang X , Cotch MF , Ryskulova A , Primo SA , Nair P , Chou CF , Geiss LS , Barker LE , Elliott AF , Crews JE , Saaddine JB . Am J Ophthalmol 2012 154 S53-S62 e1 PURPOSE: To assess vision health disparities in the United States by race/ethnicity, education, and economic status. DESIGN: Cross-sectional, nationally representative samples. METHODS: We used national survey data from the National Health and Nutrition Examination Survey (NHANES) and the National Health Interview Survey (NHIS). Main outcome measures included, from NHANES, age-related eye diseases (ie, age-related macular degeneration [AMD], cataract, diabetic retinopathy [DR], glaucoma) and from NHIS, eye care use (ie, eye doctor visits and cannot afford eyeglasses when needed) among those with self-reported visual impairment. The estimates were age- and sex-standardized to the 2000 US Census population. Linear trends in the estimates were assessed by weighted least squares regression. RESULTS: Non-Hispanic whites had a higher prevalence of AMD and cataract surgery than non-Hispanic blacks, but a lower prevalence of DR and glaucoma (all P < .001 in NHANES 2005-2008). From 1999 to 2008, individuals with less education (ie, <high school vs >high school) and lower income (poverty income ratio [PIR] <1.00 vs ≥4.00) were consistently less likely to have had an eye care visit in the past 12 months compared with their counterparts (all P < .05). During this period, inability to afford needed eyeglasses increased among non-Hispanic whites and Hispanics (trend P = .004 and P = .007; respectively), those with high school education (trend P = .036), and those with PIR 1.00-1.99 (trend P < .001). CONCLUSIONS: Observed vision health disparities suggest a need for educational and innovative interventions among socioeconomically disadvantaged groups. |
Disparities in eye care utilization among the United States adults with visual impairment: findings from the Behavioral Risk Factor Surveillance System 2006-2009
Chou CF , Barker LE , Crews JE , Primo SA , Zhang X , Elliott AF , Bullard KM , Geiss LS , Saaddine JB . Am J Ophthalmol 2012 154 S45-S52 e1 PURPOSE: To estimate the prevalence of annual eye care among visually impaired United States residents aged 40 years or older, by state, race/ethnicity, education, and annual income. DESIGN: Cross-sectional study. METHODS: In analyses of 2006-2009 Behavioral Risk Factor Surveillance System data from 21 states, we used multivariate regression to estimate the state-level prevalence of yearly eye doctor visit in the study population by race/ethnicity (non-Hispanic white, non-Hispanic black, Hispanic, and other), annual income (≥$35,000 and <$35,000), and education (< high school, high school, and > high school). RESULTS: The age-adjusted state-level prevalence of yearly eye doctor visits ranged from 48% (Missouri) to 69% (Maryland). In Alabama, Colorado, Indiana, Iowa, New Mexico, and North Carolina, the prevalence was significantly higher among respondents with more than a high school education than among those with a high school education or less (P < .05). The prevalence was positively associated with annual income levels in Alabama, Georgia, New Mexico, New York, Texas, and West Virginia and negatively associated with annual income levels in Massachusetts. After controlling for age, sex, race/ethnicity, education, and income, we also found significant disparities in the prevalence of yearly eye doctor visits among states. CONCLUSION: Among visually impaired US residents aged 40 or older, the prevalence of yearly eye examinations varied significantly by race/ethnicity, income, and education, both overall and within states. Continued and possibly enhanced collection of eye care utilization data, such as we analyzed here, may help states address disparities in vision health and identify population groups most in need of intervention programs. |
Impact of geographic density of eye care professionals on eye care among adults with diabetes
Chou CF , Zhang X , Crews JE , Barker LE , Lee PP , Saaddine JB . Ophthalmic Epidemiol 2012 19 (6) 340-9 OBJECTIVE: To examine the impact of the geographic density of eye care professionals (ECPs) on the receipt of annual dilated eye examinations among adults in the United States with diabetes. METHOD: Data from the 2006 Behavioral Risk Factor Surveillance System were linked to the 2007 Area Resource File to examine the association between the density of ECPs (ophthalmologists and optometrists) per 100,000 people and self-reports of having had a dilated eye examination in the last year. The sample included adults aged 18+ years with diabetes (N = 29,495). Multivariate logistic regression was conducted to estimate adjusted odds ratios of annual dilated eye examinations, while controlling for age, sex, marital status and education, and stratifying by health insurance. RESULTS: Approximately 10% of respondents with diabetes lived in counties with no ECPs. Prevalence of being uninsured was 7.4% and 15.5% in those with and without dilated eye exams, respectively. After controlling for covariates and stratifying by health insurance, diabetic adults with health insurance cover residing in areas with no ECPs were less likely to report having had a dilated eye examination in the past year than those with 20 or more ECPs/100,000 people (odds ratio 0.72, 95% confidence interval 0.58-0.91). CONCLUSION: Residence in a county with a low density of ECPs reduced the likelihood of receiving annual dilated eye examinations among insured adults with diabetes. Enhancing the ability of ECPs to reach and care for those in need might better protect vision in people with diabetes. More research is needed to determine the mix of services that produces the best patient outcome. |
Prevalence of age-related macular degeneration in the US population
Klein R , Chou CF , Klein BE , Zhang X , Meuer SM , Saaddine JB . Arch Ophthalmol 2011 129 (1) 75-80 OBJECTIVE: To examine the prevalence of age-related macular degeneration (AMD) in non-Hispanic white, non-Hispanic black, Mexican American, and other racial/ethnic groups. DESIGN: A US nationally representative, population-based, cross-sectional study involving a total of 5553 persons aged 40 years and older from the 2005-2008 National Health and Nutrition Examination Survey. The main outcome measure was AMD determined by the grading of 45 degrees digital images from both eyes using a standardized protocol. RESULTS: In the civilian, noninstitutionalized, US population aged 40 years and older, the estimated prevalence of any AMD was 6.5% (95% confidence interval, 5.5-7.6) and the estimated prevalence of late AMD was 0.8% (95% confidence interval, 0.5-1.3). Non-Hispanic black persons aged 60 years and older had a statistically significantly lower prevalence of any AMD than non-Hispanic white persons aged 60 years and older (odds ratio = 0.37; 95% confidence interval, 0.21-0.67). CONCLUSIONS: Overall, the prevalence of any AMD in the 2005-2008 National Health and Nutrition Examination Survey was 6.5%, which is lower than the 9.4% prevalence reported in the 1988-1994 Third National Health and Nutrition Examination Survey. While this finding might be explained in part by possible methodological differences, these estimates are consistent with a decreasing incidence of AMD and suggest important public health care implications. |
Prevalence of diabetic retinopathy in the United States, 2005-2008
Zhang X , Saaddine JB , Chou CF , Cotch MF , Cheng YJ , Geiss LS , Gregg EW , Albright AL , Klein BE , Klein R . JAMA 2010 304 (6) 649-56 CONTEXT: The prevalence of diabetes in the United States has increased. People with diabetes are at risk for diabetic retinopathy. No recent national population-based estimate of the prevalence and severity of diabetic retinopathy exists. OBJECTIVES: To describe the prevalence and risk factors of diabetic retinopathy among US adults with diabetes aged 40 years and older. DESIGN, SETTING, AND PARTICIPANTS: Analysis of a cross-sectional, nationally representative sample of the National Health and Nutrition Examination Survey 2005-2008 (N = 1006). Diabetes was defined as a self-report of a previous diagnosis of the disease (excluding gestational diabetes mellitus) or glycated hemoglobin A(1c) of 6.5% or greater. Two fundus photographs were taken of each eye with a digital nonmydriatic camera and were graded using the Airlie House classification scheme and the Early Treatment Diabetic Retinopathy Study severity scale. Prevalence estimates were weighted to represent the civilian, noninstitutionalized US population aged 40 years and older. MAIN OUTCOME MEASUREMENTS: Diabetic retinopathy and vision-threatening diabetic retinopathy. RESULTS: The estimated prevalence of diabetic retinopathy and vision-threatening diabetic retinopathy was 28.5% (95% confidence interval [CI], 24.9%-32.5%) and 4.4% (95% CI, 3.5%-5.7%) among US adults with diabetes, respectively. Diabetic retinopathy was slightly more prevalent among men than women with diabetes (31.6%; 95% CI, 26.8%-36.8%; vs 25.7%; 95% CI, 21.7%-30.1%; P = .04). Non-Hispanic black individuals had a higher crude prevalence than non-Hispanic white individuals of diabetic retinopathy (38.8%; 95% CI, 31.9%-46.1%; vs 26.4%; 95% CI, 21.4%-32.2%; P = .01) and vision-threatening diabetic retinopathy (9.3%; 95% CI, 5.9%-14.4%; vs 3.2%; 95% CI, 2.0%-5.1%; P = .01). Male sex was independently associated with the presence of diabetic retinopathy (odds ratio [OR], 2.07; 95% CI, 1.39-3.10), as well as higher hemoglobin A(1c) level (OR, 1.45; 95% CI, 1.20-1.75), longer duration of diabetes (OR, 1.06 per year duration; 95% CI, 1.03-1.10), insulin use (OR, 3.23; 95% CI, 1.99-5.26), and higher systolic blood pressure (OR, 1.03 per mm Hg; 95% CI, 1.02-1.03). CONCLUSION: In a nationally representative sample of US adults with diabetes aged 40 years and older, the prevalence of diabetic retinopathy and vision-threatening diabetic retinopathy was high, especially among Non-Hispanic black individuals. |
Health care coverage and the health care industry
Chou CF , Johnson PJ , Ward A , Blewett LA . Am J Public Health 2009 99 (12) 2282-8 OBJECTIVES: We examined rates of uninsurance among workers in the US health care workforce by health care industry subtype and workforce category. METHODS: We used 2004 to 2006 National Health Interview Survey data to assess health insurance coverage rates. Multivariate logistic regression analyses were conducted to estimate the odds of uninsurance among health care workers by industry subtype. RESULTS: Overall, 11% of the US health care workforce is uninsured. Ambulatory care workers were 3.1 times as likely as hospital workers (95% confidence interval [CI]=2.3, 4.3) to be uninsured, and residential care workers were 4.3 times as likely to be uninsured (95% CI=3.0, 6.1). Health service workers had 50% greater odds of being uninsured relative to workers in health diagnosing and treating occupations (odds ratio [OR]=1.5; 95% CI=1.0, 2.4). CONCLUSIONS: Because uninsurance leads to delays in seeking care, fewer prevention visits, and poorer health status, the fact that nearly 1 in 8 health care workers lacks insurance coverage is cause for concern. |
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