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Differences in birth-weight outcomes: A longitudinal study based on siblings
TLDR
In this paper, the authors investigated the differences in birthweight between first and second-borns, evaluating the impact of changes in pregnancy (e.g., gestational age), demographic and social maternal characteristics.Abstract:
Objectives We investigate about the differences in birthweight between firstand second-borns, evaluating the impact of changes in pregnancy (e.g., gestational age), demographic (e.g., age), and social (e.g., education level, marital status) maternal characteristics. Data and Methods All analyses are performed on data collected in Umbria (Italy) taking into account a set of 792 women who delivered twice from 2005 to 2008. Firstly, we use a univariate paired t-test for the comparison between weights of first- and second-borns. Secondly, we use linear and nonlinear regression approaches in order to: (i) evaluate the effect of demographic and social maternal characteristics and (ii) predict the odds-ratio of low and high birthweight infants, respectively. Results We find that the birthweight of second-borns is significantly higher than that of first-borns. Statistically significant effects are related with a longer gestational age, an increased number of visits during the pregnancy, and the gender of infants. On the other hand, we do not observe any significant effect related with mother’s age and with other characteristics of interest.read more
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Characteristics that modify the effect of small-quantity lipid-based nutrient supplementation on child growth: an individual participant data meta-analysis of randomized controlled trials.
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Low birthweight in second children after nurse home visiting.
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Risk factors and time trends for isolated craniosynostosis.
Jeremy M. Schraw,John P. Woodhouse,Peter H. Langlois,Peter H. Langlois,Mark A. Canfield,Angela E. Scheuerle,A. J. Agopian,Renata H. Benjamin,Philip J. Lupo +8 more
TL;DR: This work sought to investigate associations between maternal/infant characteristics and isolated craniosynostosis as well as its subtypes sagittal, metopic, and coronal synostosis, and assess trends in the prevalence of these conditions.
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The Impact of Nondifferential Exposure Misclassification on the Performance of Propensity Scores for Continuous and Binary Outcomes: A Simulation Study
TL;DR: The impact of sensitivity and specificity on the bias and coverage for each adjustment method is strongly related to prevalence of exposure: as exposure prevalence decreases and/or outcomes are continuous rather than categorical, the effect of misclassification is magnified, producing larger biases and loss of coverage of 95% confidence intervals.
References
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