Correlation of Pre-pregnancy Body Mass Index, Prenatal Weight Gain and Gestational Diabetes – A Case-Control Study

Introduction: Obese and overweight women are more prone to gestationaldiabetes mellitus (GDM). Body mass index and weight gain during pregnancyplay an important role in pregnancy and are considered important indicators ofmaternal and neonatal health. Because of the prevalence of obesity in Yazd, westudied the relationship between GDM with pre-pregnancy BMI and prenatalweight gain in pregnant women in Yazd.Methods: This case-control study was conducted on 336 pregnant women whohad just given birth, consisting of 168 pregnant women with GDM and 168healthy pregnant women as case and control group, respectively. We gathereddata from the information recorded in the health information system. In thisstudy, the chi-squared, independent t-test and correlation test were used toanalyze the data using SPSS23 software.Results: The present study showed that the average pre-pregnancy BMI and theaverage weight gained during pregnancy until screening for GDM weresignificantly higher in cases than controls (P < 0.05). Also, there was asignificant reverse correlation between pre-pregnancy BMI and weight gainduring pregnancy (r = -0.27, P < 0.001).Conclusion: Since BMI is an avoidable risk factor, we should give all womengood dietary training for proper weight before pregnancy and appropriate weightgain during pregnancy.

کلیدواژه ها:

Weight Gain ، Body Mass Index ، Gestational Diabetes