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Author: Horwitz, Ralph I.
Resulting in 2 citations.
1. Davis, Esa M.
Babineau, Denise C.
Wang, Xuelei
Zyzanski, Stephen J.
Abrams, Barbara
Bodnar, Lisa M.
Horwitz, Ralph I.
Short Inter-pregnancy Intervals, Parity, Excessive Pregnancy Weight Gain and Risk of Maternal Obesity
Maternal and Child Health Journal 18,3 (April 2014): 554-562.
Also: http://link.springer.com/article/10.1007/s10995-013-1272-3
Cohort(s): NLSY79
Publisher: Springer
Keyword(s): Modeling; Obesity; Pregnancy and Pregnancy Outcomes; Weight

Permission to reprint the abstract has not been received from the publisher.

To investigate the relationship among parity, length of the inter-pregnancy intervals and excessive pregnancy weight gain in the first pregnancy and the risk of obesity. Using a prospective cohort study of 3,422 non-obese, non-pregnant US women aged 14–22 years at baseline, adjusted Cox models were used to estimate the association among parity, inter-pregnancy intervals, and excessive pregnancy weight gain in the first pregnancy and the relative hazard rate (HR) of obesity. Compared to nulliparous women, primiparous women with excessive pregnancy weight gain in the first pregnancy had a HR of obesity of 1.79 (95 % CI 1.40, 2.29); no significant difference was seen between primiparous without excessive pregnancy weight gain in the first pregnancy and nulliparous women. Among women with the same pregnancy weight gain in the first pregnancy and the same number of inter-pregnancy intervals (12 and 18 months or ≥18 months), the HR of obesity increased 2.43-fold (95 % CI 1.21, 4.89; p = 0.01) for every additional inter-pregnancy interval of <12 months; no significant association was seen for longer inter-pregnancy intervals. Among women with the same parity and inter-pregnancy interval pattern, women with excessive pregnancy weight gain in the first pregnancy had an HR of obesity 2.41 times higher (95 % CI 1.81, 3.21; p < 0.001) than women without. Primiparous and nulliparous women had similar obesity risk unless the primiparous women had excessive pregnancy weight gain in the first pregnancy, then their risk of obesity was greater. Multiparous women with the same excessive pregnancy weight gain in the first pregnancy and at least one additional short inter-pregnancy interval had a significant risk of obesity after childbirth. Perinatal interventions that prevent excessive pregnancy weight gain in the first pregnancy or lengthen the inter-pregnancy interval are necessary for reducing maternal obesity.
Bibliography Citation
Davis, Esa M., Denise C. Babineau, Xuelei Wang, Stephen J. Zyzanski, Barbara Abrams, Lisa M. Bodnar and Ralph I. Horwitz. "Short Inter-pregnancy Intervals, Parity, Excessive Pregnancy Weight Gain and Risk of Maternal Obesity." Maternal and Child Health Journal 18,3 (April 2014): 554-562.
2. Davis, Esa M.
Zyzanski, Stephen J.
Olson, Christine M.
Stange, Kurt C.
Horwitz, Ralph I.
Racial, Ethnic, and Socioeconomic Differences in the Incidence of Obesity Related to Childbirth
American Journal of Public Health 99,2 (February 2009): 294-299.
Also: http://ajph.aphapublications.org/cgi/content/abstract/99/2/294
Cohort(s): NLSY79
Publisher: American Public Health Association
Keyword(s): Childbearing; Ethnic Differences; Minority Groups; Obesity; Racial Differences

Permission to reprint the abstract has not been received from the publisher.

OBJECTIVES: We investigated the relationship between childbirth and 5-year incidence of obesity. METHODS: We performed a prospective analysis of data on 2923 nonobese, nonpregnant women aged 14 to 22 years from the 1979 National Longitudinal Survey of Youth Cohort, which was followed from 1980 to 1990. We used multivariable logistic regression analyses to determine the adjusted relative risk of obesity for mothers 5 years after childbirth compared with women who did not have children. RESULTS: The 5-year incidence of obesity was 11.3 per 100 parous women, compared with 4.5 per 100 nulliparous women (relative risk [RR] = 3.5; 95% confidence interval [CI] = 2.4, 4.9; P < .001). The 5-year incidence of obesity was 8.6 for primiparous women (RR = 2.8; 95% CI = 1.5, 5.0) and 12.2 for multiparous women (RR = 3.8; 95% CI = 2.6, 5.6). Among parous women, White women had the lowest obesity incidence (9.1 per 100 vs 15.1 per 100 for African Americans and 12.5 per 100 for Hispanics). CONCLUSIONS: Parous women have a higher incidence of obesity than do nulliparous women, and minority women have a higher incidence of parity-related obesity than do White women. Thus, efforts to reduce obesity should target postpartum women and minority women who give birth.
Bibliography Citation
Davis, Esa M., Stephen J. Zyzanski, Christine M. Olson, Kurt C. Stange and Ralph I. Horwitz. "Racial, Ethnic, and Socioeconomic Differences in the Incidence of Obesity Related to Childbirth." American Journal of Public Health 99,2 (February 2009): 294-299.