ArticleAnnals of epidemiology2021
Comparison of methods for interpolating gestational weight gain between clinical visits in twin and singleton pregnancies.
Article in Annals of epidemiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
What it found
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Who cites it
4 citing papers in PubMed.
- Integrated community case management plus compared with outpatient therapeutic programs: a quasi-experimental study among children with severe acute malnutrition in Jowhar, Somalia.The American journal of clinical nutrition · 2026Article
- Seasonality and risk factors of relapse to acute malnutrition: a multi-country prospective cohort study in Mali, South Sudan, and Somalia, 2021-2022.Journal of public health policy · 2026Article
- Trajectory of gestational weight gain is related to birthweight: The TAWS cohort study in China.Maternal & child nutrition · 2024Article
- Investigating the Shape and Strength of the Relationship Between Maternal Weight Gain and Gestational Age at Delivery in Twin and Singleton Pregnancies.American journal of epidemiology · 2023Article
Corrections and comments
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Authors and funding
6 authors.
Funding
Abstract
purposeResearchers are interested in studying longitudinal patterns of gestational weight gain, yet this requires daily/weekly weights, and maternal weight is measured only during prenatal visits. We evaluated the relative accuracy and precision of methods for estimating maternal weight gain between prenatal visits among twin and singleton pregnancies.
methodsWe analyzed cohorts of dichorionic twin and singleton pregnancies delivered from 1998-2013 in Pittsburgh, Pennsylvania. We mimicked a typical study by retaining pre-pregnancy, first prenatal visit, glucose screening visit, and delivery weights, using these to fit interpolation models, estimating weight throughout pregnancy using 16 different methods, and calculating the difference in kilograms between predicted and measured values among remaining weights. We evaluated the performance of each model by calculating root mean squared error (RMSE).
resultsRMSE ranged from 1.55 to 6.09 kg in twins (n = 2067) and 1.45 to 4.87 kg in singletons (n = 7331). The most accurate and precise methods incorporated restricted cubic splines, random intercepts and slopes for pregnancy, and internal knots demarcating trimesters/quantiles (RMSE = 1.55/1.56 kg in twins, 1.45/1.45 kg in singletons), while individual-level linear interpolation between proximal measurements also performed well.
conclusionsAccuracy and precision of methods for estimating maternal weight gain between measurements differed by model, and were best among individually-tailored and flexible models.
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