The incidence of gestational diabetes

The incidnece of gestational diabetes has been quoted as being between 1 and 2%. The criteria used to establish this incidence may be in error, leading to identification of fewer patients. Using the criteria established by O'Sullivan et al, we were able to determine the incidence of gestational diabetes to be 6.0% in a private patient population. In addition, in previous pregnancies of these gestational diabetic patients, the incidence of congenital abnormalities was 13.6%, and perinatal mortality was 4.5 per cent.