Studies differed in terms of the definitions used for high risk pregnancy and in the types of screening tests used for defining GDM. A cohort study in a hospital in northern Thailand reported that 3% of pregnant women had GDM.
A follow up of these women after delivery showed there
was a 3.7% probability of developing type 2 diabetes at 9
months, and an 18.9% probability of developing diabetes
after 9 years.
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