ArticleBMC pregnancy and childbirth2020
Agreement between self-reported pre-pregnancy weight and measured first-trimester weight in Brazilian women.
Article in BMC pregnancy and childbirth, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers, 1 of them a synthesis that pooled it.
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Who cites it
49 citing papers in PubMed, 1 synthesis or guideline pooled it, 61 citations in OpenAlex.
- Periconceptional biomarkers for maternal obesity: a systematic review.Reviews in endocrine & metabolic disorders · 2023Pooled it
- Comparison of two methods for assessing weight gain in Brazilian pregnant women.Revista de saude publica · 2026Trial
- Trial
- Association between Pre-Pregnancy BMI and Inflammatory Profile Trajectories during Pregnancy and Postpartum in Brazilian Women with Periodontitis: The IMPROVE Trial.International journal of environmental research and public health · 2022Trial
- Proportion of Gestational Diabetes Mellitus Attributable to Overweight/Obesity Among South Asian Women: A Retrospective Cohort Study in Delhi, India.Clinical obesity · 2026Article
- Diet Diversity Is Associated with Prepregnancy Body Mass Index but Not the Pregnancy Third-Trimester Gut Microbiota.Current developments in nutrition · 2026Article
- Reliability of Self-Reported Maternal Health and Mother-Infant Outcome Data in Web-Based Questionnaires.Drug safety · 2026Article
- Postpartum weight change one year after delivery and associated factors among women in Puducherry, South India: Findings from the JANMAM cohort.International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics · 2026Article
- Preconception Weight Change and Pregnancy Outcomes After Bariatric Surgery.Journal of clinical medicine · 2026Article
- Role ofInternational journal of molecular sciences · 2026Article
- Article
- Early gestational weight gain and birth weight outcome: a Chinese population-based cohort.Pediatric research · 2026Article
- Vitamin D status during pregnancy modulates the effect of pre-pregnancy obesity on gestational diabetes mellitus risk: a birth cohort study.Public health nutrition · 2026Article
- Adequacy of gestational weight gain according to the brazilian charts: a comparison with the Institute of Medicine recommendations.Revista brasileira de ginecologia e obstetricia : revista da Federacao Brasileira das Sociedades de Ginecologia e Obstetricia · 2026Article
- Organophosphate ester exposure in pregnancy, gestational weight gain, and postpartum body composition in a U.S.-based longitudinal pregnancy cohort.Environmental health : a global access science source · 2025Article
- Interpregnancy Weight Change and Adverse Birth Outcomes: Cohort Study Using Brazil's Routine Register-Based Linked Data.Maternal & child nutrition · 2025Article
- Early Gestational Diabetes Mellitus Diagnosis: A Strategy for Mitigating Excessive Maternal Weight Gain-LINDA-Brasil Study.Nutrients · 2025Article
- Sociodemographic and dietary predictors of maternal and placental mycoestrogen concentrations in a US pregnancy cohort.Journal of exposure science & environmental epidemiology · 2025Article
- Article
- Gestational diabetes mellitus and peripartum depression: a longitudinal study of a bidirectional relationship.BMC pregnancy and childbirth · 2024Article
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Authors and funding
10 authors at 5 institutions in 4 countries.
Funding
Abstract
backgroundSelf-reported pre-pregnancy weight and weight measured in the first trimester are both used to estimate pre-pregnancy body mass index (BMI) and gestational weight gain (GWG) but there is limited information on how they compare, especially in low- and middle-income countries, where access to a weight scale can be limited. Thus, the main goal of this study was to evaluate the agreement between self-reported pre-pregnancy weight and weight measured during the first trimester of pregnancy among Brazilian women so as to assess whether self-reported pre-pregnancy weight is reliable and can be used for calculation of BMI and GWG.
methodsData from the Brazilian Maternal and Child Nutrition Consortium (BMCNC, n = 5563) and the National Food and Nutritional Surveillance System (SISVAN, n = 393,095) were used to evaluate the agreement between self-reported pre-pregnancy weight and weights measured in three overlapping intervals (30-94, 30-60 and 30-45 days of pregnancy) and their impact in BMI classification. We calculated intraclass correlation and Lin's concordance coefficients, constructed Bland and Altman plots, and determined Kappa coefficient for the categories of BMI.
resultsThe mean of the differences between self-reported and measured weights was < 2 kg during the three intervals examined for BMCNC (1.42, 1.39 and 1.56 kg) and about 1 kg for SISVAN (1.0, 1.1 and 1.2 kg). Intraclass correlation and Lin's coefficient were > 0.90 for both datasets in all time intervals. Bland and Altman plots showed that the majority of the difference laid in the ±2 kg interval and that the differences did not vary according to measured first-trimester BMI. Kappa coefficient values were > 0.80 for both datasets at all intervals. Using self-reported pre-pregnancy or measured weight would change, in total, the classification of BMI in 15.9, 13.5, and 12.2% of women in the BMCNC and 12.1, 10.7, and 10.2% in the SISVAN, at 30-94, 30-60 and 30-45 days, respectively.
conclusionIn Brazil, self-reported pre-pregnancy weight can be used for calculation of BMI and GWG when an early measurement of weight during pregnancy is not available. These results are especially important in a country where the majority of woman do not initiate prenatal care early in pregnancy.
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