Missed opportunities for type 2 diabetes mellitus screening among women with a history of gestational diabetes mellitus

Objectives. We sought to determine rates and factors associated with screening for type 2 diabetes mellitus (DM) in women with a history of gestational diabetes mellitus. Methods. We retrospectively studied women with diagnosed gestational diabetes mellitus who delivered at a university-affiliated hospital (n=570). Data sources included medical and administrative record review. Main outcome measures were the frequency of any type of glucose testing at least 6 weeks after delivery and the frequency of recommended glucose testing. We assessed demographic data, past medical history, and prenatal and postpartum care characteristics. Results. Rates of glucose testing after delivery were low. Any type of glucose testing was performed at least once after 38% of deliveries, and recommended glucose testing was performed at least once after 23% of deliveries. Among women with at least 1 visit to the health care system after delivery (n =447), 42% received any type of glucose test at least once, and 35% received a recommended glucose test at least once. Factors associated with testing were being married, having a visit with an endocrinologist after delivery, and having more visits after delivery. Conclusions. These findings suggest that most women with gestational diabetes mellitus are not screened for type 2 DM after delivery. Opportunities for DM prevention and early treatment are being missed.