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Educational Attainment and Gestational Weight Gain among U.S. Mothers.

ABSTRACT: Education is an important social determinant of many health outcomes, but the relationship between educational attainment and the amount of weight gained over the course of a woman's pregnancy (gestational weight gain [GWG]) has not been established clearly.We used data from 1979 through 2010 for women in the National Longitudinal Survey of Youth (1979) cohort (n = 6,344 pregnancies from 2,769 women). We used generalized estimating equations to estimate the association between educational attainment and GWG adequacy (as defined by 2009 Institute of Medicine guidelines), controlling for diverse social factors from across the life course (e.g., income, wealth, educational aspirations and expectations) and considering effect measure modification by race/ethnicity and prepregnancy overweight status.In most cases, women with more education had increased odds of gaining a recommended amount of gestational weight, independent of educational aspirations and educational expectations and relatively robust to sensitivity analyses. This trend manifested itself in a few different ways. Those with less education had higher odds of inadequate GWG than those with more education. Among those who were not overweight before pregnancy, those with less education had higher odds of excessive GWG than college graduates. Among women who were White, those with less than a high school degree had higher odds of excessive GWG than those with more education.The relationship between educational attainment and GWG is nuanced and nonlinear.

SUBMITTER: Cohen AK

PROVIDER: S-EPMC4958525 | biostudies-literature | 2016 Jul-Aug

REPOSITORIES: biostudies-literature

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Educational Attainment and Gestational Weight Gain among U.S. Mothers.

Cohen Alison K AK Kazi Chandni C Headen Irene I Rehkopf David H DH Hendrick C Emily CE Patil Divya D Abrams Barbara B

Women's health issues : official publication of the Jacobs Institute of Women's Health 20160629 4

<h4>Background</h4>Education is an important social determinant of many health outcomes, but the relationship between educational attainment and the amount of weight gained over the course of a woman's pregnancy (gestational weight gain [GWG]) has not been established clearly.<h4>Methods</h4>We used data from 1979 through 2010 for women in the National Longitudinal Survey of Youth (1979) cohort (n = 6,344 pregnancies from 2,769 women). We used generalized estimating equations to estimate the ass ...[more]

PMID: 27372419

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Project description:BackgroundNearly half of all women exceed the 2009 Institute of Medicine guidelines for gestational weight gain. Excess gestational weight gain is associated with adverse pregnancy outcomes.ObjectiveOur objective was to determine whether having a personal gestational weight gain goal consistent with the Institute of Medicine's recommendations for appropriate gestational weight gain and whether having a discussion with one's obstetrical provider regarding that goal were associated with appropriate gestational weight gain.Study designThis is a secondary analysis of the Nulliparous Pregnancy Outcomes Study: Monitoring Mothers-To-Be study, a prospective cohort study of nulliparous women. We asked women at their first study visit (between 6 and 13 weeks' gestation) whether they had a gestational weight gain goal and what that goal was. Furthermore, we asked whether their provider discussed a gestational weight gain goal and what that goal was. We classified personal and provider-recommended gestational weight gain goals as consistent or inconsistent with the Institute of Medicine guidelines, taking into account a woman's initial body mass index category (underweight, normal weight, overweight, and obese). We included women with live singleton term deliveries (between 37 and 43 weeks' gestation) in this analysis. We classified the primary outcome, which was gestational weight gain (defined as the difference between first visit weight and final weight before delivery), as inadequate, appropriate, or excessive, based on the Institute of Medicine guidelines and initial body mass index category. We used Student t, Wilcoxon rank-sum, and chi-square tests for bivariable analyses, and multinomial logistic regression was performed to control for confounding variables.ResultsOf 6727 eligible women, 3799 (56.5% of all eligible women) stated they had a gestational weight gain goal. Of the 3799 women with a stated goal, 2589 (38.5% of all women) had a goal consistent with the Institute of Medicine's recommendations. In addition, of the 6727 eligible women, 2188 (32.5%) reported that they discussed gestational weight gain with their provider, and 1548 of these (23.0% of all women) recalled that their provider gave a gestational weight gain goal in accordance with the Institute of Medicine guidelines. Although having any gestational weight gain goal was not associated with appropriate gestational weight gain, having a gestational weight gain goal that was consistent with the Institute of Medicine's recommendations was associated with a reduced risk of excessive (adjusted relative risk ratio, 0.77; 95% confidence interval, 0.64-0.92) and inadequate weight gain (adjusted relative risk ratio, 0.66; 95% confidence interval, 0.53-0.82). Conversely, discussing gestational weight gain goals with a provider was not associated with either inadequate or excessive gestational weight gain even if the provider's recommendations for gestational weight gain were consistent with the guidelines.ConclusionNulliparas who delivered singleton pregnancies at term who had a personal gestational weight gain goal consistent with the Institute of Medicine's recommendations were less likely to have excessive or inadequate gestational weight gain. Further study is required to evaluate the most effective way to communicate this information to patients.

Project description:Background: The association between educational attainment (EA) and offspring birth weight (BW) has been reported by several traditional epidemiological studies. However, evidence for this association tends to be mixed and confounded. This study aimed to investigate the causal association between EA of parents and offspring BW. Methods: Here, we carried out a two-sample bidirectional Mendelian randomization (MR) analysis to examine the causal association between EA of males (n = 131,695) and females (n = 162,028) and offspring BW using genetic instruments. Summary statistics of EA associated single nucleotide polymorphisms (SNPs) were extracted from a GWAS incorporating 293,723 individuals of European descent performed by the Social Science Genetic Association Consortium (SSGAC), and the effects of these SNPs on offspring BW were estimated using a GWAS meta-analysis of 86,577 participants of European descent from 25 studies. Univariable MR analyses were conducted using the inverse-variance weighted (IVW) method and four other methods. Further sensitivity analyses were carried out to test the viability of the results. Multivariable MR was used to examine the confounders between the exposure and outcome. Results: The result shows evidence that the offspring BW is positively causally affected by female EA. Each one standard deviation (SD) increase in female EA was associated with 0.24 SD higher of offspring BW (95% confidence interval [CI], 0.10 to 0.37, p < 0.001 for the IVW method). Similarly, change in offspring BW was 0.21 SD (95% CI: 0.07 to 0.34, p = 2.82 × 10-3) per one SD higher in male EA. No causal effect of BW on EA was found by any of the five methods. The causal association between female EA and offspring BW maintained after adjusting for alcoholic drinks per week and BMI. The effect of male EA on offspring BW was attenuated when we adjusted for BMI and alcoholic drinks per week using multivariable MR analysis. Conclusion: Our study indicated that female EA is positively causally associated with offspring BW. The association between male EA and offspring BW may be confounded by alcoholic drinks per week and BMI.

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Educational Attainment and Gestational Weight Gain among U.S. Mothers.

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Educational Attainment and Gestational Weight Gain among U.S. Mothers.

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