Study design: Survey-based, retrospective Canadian study.
Population: A total of 335 patients (type 1 diabetes=202; type 2 diabetes=133) recorded the frequency of nonsevere hypoglycemic episodes experienced during the preceding month, and the frequency of severe hypoglycemia experienced during the preceding 12-month period and lifetime. Mild or moderate hypoglycemia (nonsevere) was defined as a glucose value of ≤72 mg/dL and severe hypoglycemia was defined as requiring external assistance and a glucose value of <50 mg/dL.
Limitations: 1. Inadvertent exclusion of participants who did not speak either English or French, leading to biases in cultural diversity, isolation, age, and inability to access health care; 2. Those who volunteered (majority recruited from diabetes specialist clinics) to participate may have been more involved in their disease vs the general population.