High Frequency of Pre-Existing Type 2 Diabetes in a Series of Pregnant Women Referred for "Gestational Diabetes" in a Large Canadian Indigenous Community

We examined the referral processes and true diagnostic classifications for diabetes complicating pregnancy in a series of 62 pregnant women consecutively referred to a diabetes education and treatment centre in a large Indigenous community in Alberta, Canada. The referrals were made over a 5-year period (2010 to 2015). The main findings of this analysis were the high frequency (38.7%) of pre-existing type 2 diabetes and previously undiagnosed or unrecognized overt diabetes and the deficiencies in early testing and recognition.