Adherence was measured using the Insulin Treatment Adherence Measure, a version validated in Brazil.<h4>Results</h4>A higher proportion of women (63.2%), without private health plan (84.2%), with a medically diagnosed type 2 diabetes (93.3%), inadequate glycemic control (76.9%), and without diabetic retinopathy (71.7%) was observed. Here, INS is linked to type 2 diabetes mellitus.