Variation in the cancer risk ratio in relation to exposure duration for users of ADM compared to non-users.

Model I: Adjusted for age, gender, calendar time.Model II: Adjusted for age, gender, calendar time, BMI, smoking status, interaction of age and gender, age, and BMI.Abbreviations: ADM, anti-diabetic medication; OADM, oral anti-diabetic medication; N, number of incident cancer cases; IR, incidence rate; PY, person-years; RR, risk ratio; CI, confidence intervals.Variation in the cancer risk ratio in relation to exposure duration for users of ADM compared to non-users.