INS and diabetes mellitus: Patients treated with drugs other than insulin, insulin itself or a combination therapy constituted 48.6% (95% CI 42.3–54.9), 22.0% (95% CI 17.9–27.5) and 5.1% (95% CI 2.7–8.6) respectively of respondents with self-reported diabetes, and 64.3% (95% CI 57.0–71.0), 29.0% (95% CI 22.7–36.0) and 6.7% (95% CI 3.6–11.2) of respondents declaring diabetes drug treatment.