Last data update: Jun 11, 2024. (Total: 46992 publications since 2009)
Records 1-3 (of 3 Records) |
Query Trace: McDowell MA [original query] |
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Feasibility of an audio computer-assisted self-interview method to self-assess sexual maturation
Lamb MM , Beers L , Reed-Gillette D , McDowell MA . J Adolesc Health 2011 48 (4) 325-30 PURPOSE: Sexual maturation assessment using physical examination may no longer be feasible in some large epidemiologic surveys, such as National Health and Nutrition Examination Survey, because of the sensitivity of the examination and privacy concerns. This study tested the feasibility of a new automated audio computer-assisted self-interview (ACASI) module for children and adolescents for self-assessment of sexual maturation. METHODS: A cross-sectional feasibility study was conducted at a large urban children/adolescent clinic in Washington D.C. Self-assessed sexual maturation (Tanner stages) was reported by 234 youths (119 boys and 115 girls) aged 8-18 years by using the ACASI module. Girls assessed their breast and pubic hair development, and boys assessed their genital and pubic hair development. Self-assessments were compared with Tanner stages recorded by clinical examiners during routine well-child physical examinations conducted on the same day. RESULTS: There was good/excellent agreement between boy's self-assessment and the examiner's assessment of their genital stage (weighted kappa: .65, 95% confidence interval [CI]: .55-.75) and pubic hair stage (weighted kappa: .78, CI: .70-.86). There was excellent agreement between girl's self-assessment and the examiner's assessment of their breast stage (weighted kappa: .81, CI: .74-.87) and pubic hair stage (weighted kappa: .78, CI: .71-.86). CONCLUSION: The ACASI method is a feasible method of pubertal self-assessment for participants as young as 8 years in large epidemiologic surveys. However, additional testing is needed to determine the validity of this ACASI module. |
Total folate and folic acid intakes from foods and dietary supplements of US children aged 1-13 y
Bailey RL , McDowell MA , Dodd KW , Gahche JJ , Dwyer JT , Picciano MF . Am J Clin Nutr 2010 92 (2) 353-8 BACKGROUND: Total folate intake includes naturally occurring food folate and folic acid from fortified foods and dietary supplements. Recent reports have focused on total folate intakes of persons aged ≥14 y. Information on total folate intakes of young children, however, is limited. OBJECTIVE: The objective was to compute total folate and total folic acid intakes of US children aged 1-13 y by using a statistical method that adjusts for within-person variability and to compare these intakes with the Dietary Reference Intake guidelines for adequacy and excess. DESIGN: Data from the 2003-2006 National Health and Nutrition Examination Survey, a nationally representative cross-sectional survey, were analyzed. Total folate intakes were derived by combining intakes of food folate (naturally occurring and folic acid from fortified foods) on the basis of 24-h dietary recall results and folic acid intakes from dietary supplements on the basis of a 30-d questionnaire. RESULTS: More than 95% of US children consumed at least the Estimated Average Requirement (EAR) for folate from foods alone. More than one-third (35%) of US children aged 1-13 y used dietary supplements, and 28% used dietary supplements containing folic acid. Supplement users had significantly higher total folate and folic acid intakes than did nonusers. More than half (53%) of dietary supplement users exceeded the Tolerable Upper Intake Level (UL) for total folic acid (fortified food + supplements) as compared with 5% of nonusers. CONCLUSIONS: Total folate intakes of most US children aged 1-13 y meet the EAR. Children who used dietary supplements had significantly higher total folate intakes and exceeded the UL by >50%. |
Total folate and folic acid intake from foods and dietary supplements in the United States: 2003-2006
Bailey RL , Dodd KW , Gahche JJ , Dwyer JT , McDowell MA , Yetley EA , Sempos CA , Burt VL , Radimer KL , Picciano MF . Am J Clin Nutr 2010 91 (1) 231-7 BACKGROUND: The term total folate intake is used to represent folate that occurs naturally in food as well as folic acid from fortified foods and dietary supplements. Folic acid has been referred to as a double-edged sword because of its beneficial role in the prevention of neural tube defects and yet possible deleterious effects on certain cancers and cognitive function. Previous monitoring efforts did not include folic acid from dietary supplements and are therefore not complete. OBJECTIVE: Our objective was to combine data on dietary folate (as measured by two 24-h recalls) and folic acid from dietary supplements (collected with a 30-d frequency questionnaire) with the use of the bias-corrected best power method to adjust for within-person variability. DESIGN: The National Health and Nutrition Examination Survey (NHANES) is a nationally representative, cross-sectional survey. Linear contrasts were constructed to determine differences in dietary and total folate intake for age and racial-ethnic groups by sex; prevalence of inadequate and excessive intakes is presented. RESULTS: In 2003-2006, 53% of the US population used dietary supplements; 34.5% used dietary supplements that contained folic acid. Total folate intake (in dietary folate equivalents) was higher for men (813 +/- 14) than for women (724 +/- 16) and higher for non-Hispanic whites (827 +/- 19) than for Mexican Americans (615 +/- 11) and non-Hispanic blacks (597 +/- 12); 29% of non-Hispanic black women had inadequate intakes. Total folate and folic acid intakes are highest for those aged > or =50 y, and 5% exceed the Tolerable Upper Intake Level. CONCLUSIONS: Improved total folate intake is warranted in targeted subgroups, which include women of childbearing age and non-Hispanic black women, whereas other population groups are at risk of excessive intake. |
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