Strengths and limitations
obese, overweight
DISEASES, OBESE, PROLONGED PREGNANCY
A strength of this study is that the data are drawn from the population-based register, including a large number of data and almost all women giving birth in Stockholm. Further, there is a low percentage of missing values.The study also has some limitations. In Sweden, there are regional differences in the prevalence of women with overweight and obesity. According to Chaparro et al. [We do not know the causes for stillbirth in this study. Additionally, we have no information on why the women who were obese were still pregnant around their due date. Some of the women could have been offered induction of labor but declined. Even if the risk of stillbirth increases by being overweight and prolonged pregnancy, the outcome is rare, and the woman’s choice is important in person-centered care.The aim of the study was to identify sociodemographic factors and investigate outcomes related to BMI; we have not adjusted for potential confounders. When comparing obese women with women of normal weight, it is possible that other factors affect the outcomes among obese women. The comparing groups differ in sociodemographic factors, such as country of origin, educational level, previous stillbirth, tobacco use and diseases, factors that may have affected the outcomes.