Prevalence of Macrosomia and its Related Factors among Singleton Live-Birth in Tehran Province, Iran

Macrosomia is a risk factor for adverse delivery outcomes. The aim of this study was to determine the rate of macrosomia among singleton life-birth, and identify factors associated with it.
This cross-sectional study was conducted on 4342 pregnant women who gave singleton live-birth in Tehran province, Iran, during 6-21 July 2015. Data were collected using a researcher-made questionnaire through interview with mothers and review of their medical records. To identify factor associated with macrosomia, logistic regression model was used.
Findings: The macrosomia rate was 3.4% in this study. In univariate analysis, higher maternal age, height, body mass index, gestational age, birth order and history of stillbirth and male infant sex were associated with macrosomia. Moreover, multivariate analysis showed a significant relationship between macrosomia and higher height, body mass index, gestational age, birth order and male infant sex.
According to the results, factors such as mother’s age, height, body mass index, and gestational age, birth order and male infant sex were associated with macrosomia. Considering these factors could be effective in determining at-risk neonates and reducing maternal-infant side-effects of macrosomia.