INS and type 2 diabetes mellitus: Adults with T2DM, aged 42.3-60.8 years, 25.9%-81.4% were females. In 3 studies reporting race, 15%-47.6% were non-White participants. 35.5%-100% took oral antihyperglycemic medication, 11.8%-37.8% used insulin, and 23.5%-30% had mixed oral medication and insulin