Last data update: May 13, 2024. (Total: 46773 publications since 2009)
Records 1-6 (of 6 Records) |
Query Trace: Nakamoto J[original query] |
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Elevated depressive symptoms among hired crop workers in the United States: Variation by sociodemographic and employment characteristics
Alterman T , Grzywacz JG , Muntaner C , Shen R , Gabbard S , Georges A , Nakamoto JM , Carroll DJ . Rural Ment Health 2018 42 (2) 69-88 We present prevalence rates, along with demographic and economic characteristics associated with elevated depressive symptoms (EDS), in a nationally representative sample of hired crop workers in the United States. We analyzed in-person interviews with 3,691 crop workers collected in 2009-2010 as part of a mental health and psychosocial supplement to the National Agricultural Workers Survey. The prevalence of EDS was 8.3% in men and 17.1% in women. For men, multivariate analysis showed that EDS was associated with years of education, family composition, having a great deal of difficulty being separated from family, having fair or poor general health, ability to read English, fear of being fired from their current farm job, and method of payment (piece, salary, or a combination). Interactions were found between region of the country and family composition. Multivariate analyses for women showed that fear of being fired, fair or poor general health, having children <=15 years of age, being unaccompanied by their nuclear family, expectation for length of time continuing to do farm work in the United States, and authorization status were associated with EDS. Interactions were found with Hispanic ethnicity and region of the country, as well as presence of the nuclear family and region. The present study identifies important risk factors in this first population-based assessment of EDS in a nationally representative sample of U.S. crop workers. The importance of social support from family, job insecurity, and high prevalence of EDS in female crop workers support the need for screening and outreach in this primarily rural group of men and women crop workers. (PsycINFO Database Record (c) 2018 APA, all rights reserved) |
A longitudinal study of estrogen-responsive tissues and hormone concentrations in infants fed soy formula
Adgent MA , Umbach DM , Zemel BS , Kelly A , Schall JI , Ford EG , James K , Darge K , Botelho JC , Vesper HW , Chandler DW , Nakamoto JM , Rogan WJ , Stallings VA . J Clin Endocrinol Metab 2018 103 (5) 1899-1909 Purpose: Chemicals with hormone-like activity, such as estrogenic isoflavones, may perturb human development. Infants exclusively fed soy-based formula are highly exposed to isoflavones, but their physiologic responses remain uncharacterized. Here, we compare estrogen-responsive postnatal development in infants exclusively fed soy formula, cow-milk formula and breast milk. Methods: We enrolled 410 infants born in Philadelphia area hospitals, 2010-2013; 283 infants were exclusively fed soy formula (n=102), cow-milk formula (n=111), or breast milk (n=70) throughout the study (birth to 28 [boys] or 36 [girls] weeks). We repeatedly measured maturation index (MI) in vaginal and urethral epithelial cells using standard cytological methods, uterine volume and breast-bud diameter using ultrasound, serum estradiol and, in girls, follicle-stimulating hormone. We estimated MI, organ-growth and hormone trajectories by diet using mixed-effects regression splines. Results: Maternal demographics did not differ between cow-milk-fed and soy-fed infants but did differ between formula-fed and breastfed infants. Vaginal cell MI trended higher (p=0.01) and uterine volume decreased more slowly (p=0.01) in soy-fed girls compared to cow-milk-fed girls; however, their trajectories of breast-bud diameter and hormone concentrations did not differ. We observed no significant differences between boys fed cow-milk formula versus soy formula; estradiol was not detectable. Breastfed infants differed from soy-formula-fed infants in vaginal cell MI, uterine volume, girls' estradiol and boys' breast-bud diameter trajectories. Conclusions: Relative to cow-milk formula-fed girls, soy formula-fed girls demonstrated tissue and organ-level developmental trajectories consistent with response to exogenous estrogen exposure. Additional studies are needed to further evaluate the effects of soy on child development. |
Evaluating job demands and control measures for use in farm worker health surveillance
Alterman T , Gabbard S , Grzywacz JG , Shen R , Li J , Nakamoto J , Carroll DJ , Muntaner C . J Immigr Minor Health 2014 17 (5) 1364-73 Workplace stress likely plays a role in health disparities; however, applying standard measures to studies of immigrants requires thoughtful consideration. The goal of this study was to determine the appropriateness of two measures of occupational stressors ('decision latitude' and 'job demands') for use with mostly immigrant Latino farm workers. Cross-sectional data from a pilot module containing a four-item measure of decision latitude and a two-item measure of job demands were obtained from a subsample (N = 409) of farm workers participating in the National Agricultural Workers Survey. Responses to items for both constructs were clustered toward the low end of the structured response-set. Percentages of responses of 'very often' and 'always' for each of the items were examined by educational attainment, birth country, dominant language spoken, task, and crop. Cronbach's alpha, when stratified by subgroups of workers, for the decision latitude items were (0.65-0.90), but were less robust for the job demands items (0.25-0.72). The four-item decision latitude scale can be applied to occupational stress research with immigrant farm workers, and potentially other immigrant Latino worker groups. The short job demands scale requires further investigation and evaluation before suggesting widespread use. |
Job control, psychological demand, and farmworker health: evidence from the National Agricultural Workers Survey
Grzywacz JG , Alterman T , Gabbard S , Shen R , Nakamoto J , Carroll DJ , Muntaner C . J Occup Environ Med 2013 56 (1) 66-71 OBJECTIVE: Improve understanding of the potential occupational health impact of how agricultural jobs are organized. Exposure to low job control, high psychological demands, and high job strain were hypothesized to have greater risk for poor self-rated physical health and elevated depressive symptoms. METHODS: Cross-sectional data (N = 3691) obtained using the Work Organization and Psychosocial Factors module of the US National Agricultural Workers Survey fielded in 2009-2010. RESULTS: More than one fifth (22.4%) of farmworkers reported fair/poor health, and 8.7% reported elevated depressive symptoms. High psychological demand was associated with increased risk of fair/poor health (odds ratio, 1.73; 95% confidence interval, 1.4 to 2.2) and elevated depressive symptoms (odds ratio, 2.6; 95% confidence interval, 1.9 to 3.8). CONCLUSIONS: The organization of work in field agriculture may pose risks for poor occupational health outcomes among a vulnerable worker population. |
Depression, social factors, and farmworker health care utilization
Georges A , Alterman T , Gabbard S , Grzywacz JG , Shen R , Nakamoto J , Carroll DJ , Muntaner C . J Rural Health 2013 29 Suppl 1 s7-16 PURPOSE: Farmworkers frequently live in rural areas and experience high rates of depressive symptoms. This study examines the association between elevated depressive symptoms and health care utilization among Latino farmworkers. METHODS: Data were obtained from 2,905 Latino farmworkers interviewed for the National Agricultural Workers Survey. Elevated depressive symptoms were measured using the Center for Epidemiologic Studies Depression short-form. A dichotomous health care utilization variable was constructed from self-reported use of health care services in the United States. A categorical measure of provider type was constructed for those reporting use of health care. RESULTS: Over 50% of farmworkers reported at least 1 health care visit in the United States during the past 2 years; most visits occurred in a private practice. The odds of reporting health care utilization in the United States were 45% higher among farmworkers with elevated depressive symptoms. Type of provider was not associated with depressive symptoms. Women were more likely to seek health care; education and family relationships were associated with health care utilization. CONCLUSIONS: Latino farmworkers who live and work in rural areas seek care from private practices or migrant/Community Health Clinics. Farmworkers with elevated depressive symptoms are more likely to access health care. Rural health care providers need to be prepared to recognize, screen, and treat mental health problems among Latino farmworkers. Outreach focused on protecting farmworker mental health may be useful in reducing health care utilization while improving farmworker quality of life. |
Mental health research with Latino farmworkers: a systematic evaluation of the short CES-D
Grzywacz JG , Alterman T , Muntaner C , Shen R , Li J , Gabbard S , Nakamoto J , Carroll DJ . J Immigr Minor Health 2010 12 (5) 652-8 Mental health research among Latino farmworkers is hampered by the absence of measurement evaluation that ensures farmworkers understand and can consistently and appropriately respond to questions about mental health. Cross-sectional data were obtained from 409 farmworkers via interviewer-administered survey questionnaires. Mental health was operationalized with the short-form Center for Epidemiologic Studies, Depression (CES-D) scale. The structured interviewer-administered survey questionnaires included measures to capture personal and work-related factors that could affect farmworkers' ability to understand and respond to mental health questions probed by the CES-D. Good variability in item response was observed across the 10 short-form CES-D items. There was no evidence of differential response across sub-groups of farmworkers for six of the 10 items. Responses to four of the 10 items differed by educational attainment, country of origin, and language preference. Overall, the internal consistency of the 10 items exceeded standard conventions, and observed differences in depressive symptoms were as expected. Researchers in farmworker mental health must remain attentive to the strength and validity of available measures for migrants, different ethnic groups and different socioeconomic backgrounds. Nevertheless, the overall pattern suggests that the CES-D is a viable tool for advancing farmworker mental health research. |
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