(i) Patients related factors
One study reported that high body mass index (BMI) was associated with type 2 diabetes 26. In five studies, patients having poor knowledge of type 2 diabetes were more likely to be non-adherent to their diabetes medication compared to those patients having good knowledge18,26,32,37,42. In two studies, low concerns about medication treatment were associated with diabetes medication non-adherence15,42. Likewise, two studies reported that low self-efficacy was associated with diabetes medication non-adherence among individuals with type 2 diabetes32,41.