Prevalence of pre-existing diabetes in pregnancy doubled in seven years in a Californian population

doi:10.1136/bmj.39569.628866.DB

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David Spurgeon

¹Quebec

The prevalence of pre-existing diabetes in pregnancy doubled during the seven years from 1999 to 2005 in a large study of an ethnically diverse population in California (Diabetes Care 2008;899-904; doi: 10.2337/dc07-2345).

Prevalence doubled for women aged 20-39 years and increased fivefold for teenagers in that time. Women aged 40 or more had a small but significant increase in prevalence of pre-existing diabetes. The increase among younger women was said possibly to reflect either an increasing prevalence of diabetes or an earlier …