Between 2006 and 2015, the trends in prevalence of Hyperglycemia in pregnancy (HIP);Gestational diabetes(GDM),Diabetes in Pregnancy(DIP), Pre existing diabetes (PDM) and GDM risk factors were studied in 30692 pregnancies among Asian Indian women.
GDM (n=4089) and DIP (n=259) diagnoses were by 75 g OGTT, while PDM (n=103) was identified by ICD code O24. Women with DIP and PDM were grouped together as pre-gestational diabetes (PGDM n=362).Crude and age-adjusted prevalence trend analysis by Poisson and Jointpoint regression models respectively, were done in GDM and PGDM groups.
During study years, the GDM prevalence by WHO 1999 and modified IADPSG criteria, showed decreasing and static trends respectively, while PGDM prevalence remained static. In a subgroup of 2560 women, mean BMI increased from 24.12±4.16 in year 2011 to 25.18±4.7 Kg/m in 2015 (p<0.014), but this rise had no impact on GDM prevalence. GDM risk factors; maternal age, gravidity ≥ 3, previous GDM and abortion, high income, diabetes and hypertension in family, were higher in 2011-2015 than in 2006-2010 period. On multivariate analysis, BMI was not an independent GDM risk factor.
Despite rise in conventional GDM risk factors, HIP prevalence was static for a decade among pregnant Asian Indian women.

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