Concordance between self-reported pre-pregnancy body mass index (BMI) and BMI measured at the first prenatal study contact.
Concordance between self-reported pre-pregnancy body mass index (BMI) and BMI measured at the first prenatal study contact.
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DOI：
10.1186/s12884-016-0983-z
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发表时间：
2016-07-26
影响因子：
3.1
通讯作者：
Williams MA
中科院分区：
文献类型：
--
作者：
Natamba BK;Sanchez SE;Gelaye B;Williams MA
2009年医学研究所（IOM）的妊娠期体重建议是针对女性孕前体重指数（BMI）而制定的。关于估计妇女孕前BMI的方法的证据有限，特别是对于生活在低收入和中等收入国家的妇女。使用从秘鲁孕妇中收集的数据，我们比较了自我报告的孕前BMI与最早产前研究访视时测量的BMI之间的一致性。数据来自妊娠结局母婴研究（PrOMIS），这是秘鲁利马国家围产期研究所（INMP）的一组孕妇。2605名年龄为18至49岁的女性（平均胎龄± SD = 10.9 ± 3.3周）被纳入研究。在首次产前研究联系时收集自我报告的孕前体重和身高以及测量的体重和身高。我们评估了测量和自我报告的BMI之间的一致性;以及使用测量和自我报告的BMI获得的营养状况指标之间的一致性。平均而言，第一次产前研究访视时测量的体重比自我报告的孕前体重高0.27 kg（p < 0.05）;测量的身高比自我报告的孕前身高低0.02 m（p < 0.001）。相应地，测量的BMI比自我报告的BMI高0.71 kg/m2（p < 0.001）。散点图和Bland-Altman图表明测量的BMI和自我报告的BMI之间具有很强的一致性。当使用自我报告的BMI（59.6%）时，正常BMI类别中的女性比例往往高于使用测量的BMI（50.4%）。相反，使用自我报告的BMI（38.2%）时，超重或肥胖BMI类别中的女性比例往往低于使用测量的BMI（47.7%）。自我报告的孕前BMI与第一次产前研究联系时测量的BMI密切相关。研究结果可能表明，在这种情况下，孕前BMI和首次产前研究联系时测量的BMI之间的变化很小;或者，本研究中的女性只是回忆了最近测量的人体测量值（包括在指数妊娠期间但在入组PrOMIS研究之前获得的值）。本文的在线版本（doi：10.1186/s12884-016-0983-z）包含补充材料，可供授权用户使用。
The 2009 Institute of Medicine (IOM) gestational weight recommendations are tailored to women’s pre-pregnancy body mass index (BMI). Limited evidence exists on methods for estimating women’s pre-pregnancy BMI, particularly for women living in low and middle income countries. Using data from collected among Peruvian pregnant women, we compared the concordance between self-reported pre-pregnancy BMI with BMI measured at the earliest prenatal study visit. Data were from the Pregnancy Outcomes Maternal and Infant Study (PrOMIS), a cohort of pregnant women at the Instituto Nacional Materno Perinatal (INMP) in Lima, Peru. 2605 women aged 18 to 49 years (mean ± SD gestational age = 10.9 ± 3.3 weeks) were included in the study. Self-reported pre-pregnancy weight and height and measured weight and height were collected at the first prenatal study contact. We assessed the concordance between measured and self-reported BMI; and, the agreement among indicators of nutritional status obtained using measured and self-reported BMI. On average, weight measured at the first prenatal study visit was 0.27 kg higher than self-reported pre-pregnancy weight (p < 0.05); and, measured height was 0.02 m lower than self-reported pre-pregnancy height (p < 0.001). Correspondingly, measured BMI was 0.71 kg/m2 higher than self-reported BMI (p < 0.001). Scatter and Bland-Altman plots indicated strong concordance between measured and self-reported BMI. The proportion of women in the normal BMI category tended to be higher when using self-reported BMI (59.6 %) than when using measured BMI (50.4 %). Conversely, the proportion of women in the overweight or obese BMI categories tended to be lower when using self-reported BMI (38.2 %) than when using measured BMI (47.7 %). Self-reported pre-pregnancy BMI was strongly correlated with BMI measured at the first prenatal study contact. The findings potentially suggest that, in this context, there is minimal change between pre-pregnancy BMI and BMI measured at the first prenatal study contact; or, that women in this study just recalled their most recent measured anthropometrics (including values obtained during the index pregnancy but before enrollment in the PrOMIS study). The online version of this article (doi:10.1186/s12884-016-0983-z) contains supplementary material, which is available to authorized users.