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Birth characteristics of women who develop gestational diabetes: population based study

Women with gestational diabetes are at increased risk of non-insulin dependent diabetes and their babies are at increased risk of adverse perinatal outcomes.1 These risks can be reduced by better detection and control of diabetes.2 Identifying risk factors for gestational diabetes may improve screening programmes. As low birth weight has been related to non-insulin dependent diabetes in elderly populations,3 we decided to investigate whether women's characteristics at birth could predict their subsequent risk of gestational diabetes.

We used linked generation data from the medical birth registry of Norway to study all women born in 1967–84 who had given birth between 1988 and 1998. The registry is a compulsory reporting system and files used for analysis are anonymised. Although there were 141 107 women in the cohort, we excluded 2393 who were not singletons.

We compared the birth characteristics of women with and without self reported …