Andrew G Rundle1, Shakira F Suglia2, Ezra S Susser3, Pam Factor-Litvak3, Dana March3, Katrina L Kezios3, Gina S Lovasi4, Kim M Fader3, Howard Andrews5, Piera M Cirillo6, Barbara A Cohn6, Bruce G Link7. 1. Department of Epidemiology, Mailman School of Public Health, New York, NY. Electronic address: Agr3@cumc.columbia.edu. 2. Department of Epidemiology, Rollins School of Public Health, NE, Atlanta, GA. 3. Department of Epidemiology, Mailman School of Public Health, New York, NY. 4. Department of Epidemiology and Biostatistics, Dornsife School of Public Health Drexel University, Philadelphia, PA. 5. Department of Biostatistics, Mailman School of Public Health, New York, NY. 6. Public Health Institute, The Child Health and Development Studies, Berkeley, CA. 7. Department of Sociology, University of California, Riverside, Riverside, CA.
Abstract
PURPOSE: The purpose of this study was to assess when in the life-course race-by-sex disparities in body mass index (BMI) emerge. METHODS: Child Health and Development Studies participants, from whom height and weight data were collected at ages 5, 9-11, and 15-17 years, were followed up at the age of 50 years for anthropometric outcomes. Follow-up was completed for 605 subjects, 460 of whom were assessed for height and weight at the age of 50 years, had at least one available childhood BMI measure, and self-identified as either non-Hispanic black or non-Hispanic white. Linear regression analyses were conducted to determine whether interactions existed between race (black vs. white) and sex for predicting BMI at ages 5, 9-11, 15-17, and 50 years. RESULTS: At age 5 years, BMI was independent of sex for both blacks and whites, but by the age of 9-11 years, BMI was sex-dependent in blacks, with higher BMI observed among black females. This sex dependence for BMI among blacks persisted at ages 15-17 years and age 50 years. The race-by-sex interaction was significant at ages 9-11, 15-17, and 50 years (P for interaction = 0.001, 0.002, and 0.01, respectively). CONCLUSIONS: Race-by-sex disparities in body size were observed by the age of 9-11 years and persisted until the age of 50 years.
PURPOSE: The purpose of this study was to assess when in the life-course race-by-sex disparities in body mass index (BMI) emerge. METHODS:Child Health and Development Studies participants, from whom height and weight data were collected at ages 5, 9-11, and 15-17 years, were followed up at the age of 50 years for anthropometric outcomes. Follow-up was completed for 605 subjects, 460 of whom were assessed for height and weight at the age of 50 years, had at least one available childhood BMI measure, and self-identified as either non-Hispanic black or non-Hispanic white. Linear regression analyses were conducted to determine whether interactions existed between race (black vs. white) and sex for predicting BMI at ages 5, 9-11, 15-17, and 50 years. RESULTS: At age 5 years, BMI was independent of sex for both blacks and whites, but by the age of 9-11 years, BMI was sex-dependent in blacks, with higher BMI observed among black females. This sex dependence for BMI among blacks persisted at ages 15-17 years and age 50 years. The race-by-sex interaction was significant at ages 9-11, 15-17, and 50 years (P for interaction = 0.001, 0.002, and 0.01, respectively). CONCLUSIONS: Race-by-sex disparities in body size were observed by the age of 9-11 years and persisted until the age of 50 years.
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Authors: Andrew G Rundle; Pam Factor-Litvak; Shakira F Suglia; Ezra S Susser; Katrina L Kezios; Gina S Lovasi; Piera M Cirillo; Barbara A Cohn; Bruce G Link Journal: Child Obes Date: 2020-04 Impact factor: 2.992
Authors: Shakira F Suglia; Allison A Appleton; Maria E Bleil; Rebecca A Campo; Shanta R Dube; Christopher P Fagundes; Nia J Heard-Garris; Sara B Johnson; Natalie Slopen; Catherine M Stoney; Sarah E Watamura Journal: Prev Med Date: 2021-07-19 Impact factor: 4.018