“…Of the three studies that reported on race, the percentage of non-white participants ranged from 15% to 47.6%. 23,24,30 A total of 35.5% to 100.0% participants took oral antihyperglycemic medication, 19,15,22,25,26,28,29,31 11.8% to 37.8% participants injected insulin, 22,25,29,31 and 23.5% to 30% had mixed oral medication and insulin. 25,26 A total of six studies reported the duration of diabetes, ranging from 2.6 to 13.7 y 15,19,23,27,29,31 Among 15 reviewed studies, a total of eight studies were two-arm RCT intervention, 15,20,22,23,[25][26][27][28] two studies were two-arm quasi-experimental studies, 18,24 and five studies were single-group intervention.…”