• Silma Kaaffah, Pradana Soewondo, Woro Riyadina, Fransiskus Samuel Renaldi, and Rani Sauriasari.
• Faculty of Pharmacy, Universitas Indonesia, Depok, Indonesia.
• Patient Prefer Adher. 2021 Jan 1; 15: 2467-2477.

PurposeLarge-scale evaluation of the treatment adherence in patients with type 2 diabetes mellitus (DM) in Indonesian is limited. We aim to evaluate the treatment adherence of Indonesian type 2 DM patients using national "big data" and investigate its association with glycemic parameters.Patients And MethodsWe analyzed baseline and fourth-year data sets from 2011 to 2018 obtained from the Indonesian Ministry of Health Cohort Study of Non-Communicable Disease Risk Factors in Bogor, West Java (the PTM Bogor Cohort Study). This was a retrospective cohort study in which the sample was divided into two groups. One group adhered to treatment from primary health centers and followed the prescribed medicine/treatment regimen (treated group), while the other did not follow the treatment (untreated group). We evaluated changes in fasting blood glucose (FBG) and post-prandial blood glucose (PPBG) by controlling for other variables.ResultsFrom 5690 subjects, 593 were type 2 DM diagnosed and 342 were eligible at the baseline. At 4-year observation, 212 eligible patients remained, consisting of 62 subjects who adhered to treatment, and more than double that number who were untreated (150 subjects). More significant decreases in FBG and PPBG were found in the treated group (FBG 80.6%, PPBG 90.3%) than in the untreated group (FBG 42.0%, PPBG 67.3%). The results of the multivariate analysis showed that after 4 years observation, treated patients have reduced FBG 3.304 times more and PPBG 3.064 times more than untreated patients, with control factors such as decrease in LDL levels and use of oral drugs.ConclusionThere were less than half as many treated patients as untreated patients involved in the PTM Bogor Study Group. At the fourth-year follow-up, treated patients experienced three times more significant decreases in FBG and PPBG than those who were untreated, even after being controlled by several confounding factors. Given the importance of these findings, it is suggested that immediate strategic action be taken to improve Indonesian patients' adherence to treatment.© 2021 Kaaffah et al.

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