Effects of an actual insulin injection demonstration on insulin acceptance among patients with T2DM: a pragmatic randomized controlled trial.

Insulin injection refusal is a challenge when initiating insulin therapy. This study aimed to investigate the effects of an actual insulin injection demonstration on insulin acceptance in patients with type 2 diabetes mellitus (T2DM). A pragmatic randomised controlled trial (RCT) was conducted. The participants were patients with T2DM aged 18-65 years old. The control group (CG) received an educational programme regarding T2DM. The intervention group (IG) received the educational programme and actual insulin injection demonstration (a physician-led sample insulin injection using an insulin pen). The main outcome was immediate insulin acceptance. Insulin adherence, glycated haemoglobin (HbA1c), and adverse effects of insulin were evaluated at three months after the intervention. Forty-nine participants with T2DM were allocated to the IG (n = 24) and the CG (n = 25). The immediate insulin acceptance was significantly higher in the IG (79.17%, n = 19) than the CG (24.00%, n = 6; p < 0.05; RR 3.30, 95% CI 1.59 to 6.82). At the three-month follow-up, the insulin adherence was significantly different between the two groups (IG: 75.00%, n = 18 vs CG: 20.00%, n = 5; p < 0.05; RR 3.75, 95% CI 1.66 to 8.49). Adverse effects of insulin, HbA1c levels, and changes in HbA1c levels between the IG and CG were not different. The physician-led actual insulin injection demonstration is effective for increasing insulin acceptance among participants with T2DM.