• Wen-Hsuan Hou, Kai-Cheng Chang, Chung-Yi Li, and Huang-Tz Ou.
• aMaster Program in Long-Term Care, College of Nursing, Taipei Medical University, Taipei, Taiwan bSchool of Gerontology Health Management, College of Nursing, Taipei Medical University, Taipei, Taiwan cDepartment of Physical Medicine and Rehabilitation, Taipei Medical University Hospital, Taipei, Taiwan dCochrane Taiwan, Taipei Medical University, Taipei, Taiwan eInstitute of Clinical Pharmacy and Pharmaceutical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan fDepartment and Institute of Public Health, College of Medicine, National Cheng Kung University, Tainan, Taiwan gDepartment of Public Health, College of Public Health, China Medical University, Taichung, Taiwan.
• Pain. 2016 Sep 1; 157 (9): 1954-9.

AbstractThis is the first large longitudinal cohort study to investigate the putative association of severe joint pain (SJP) with dipeptidyl peptidase-4 inhibitor (DPP4i) use in patients with type 2 diabetes. The propensity score-matched population-based cohort study was performed between 2009 and 2013 in a group of type 2 diabetes patients with stable metformin use. In total, 4743 patients with type 2 diabetes used a DPP4i as the second-line antidiabetic drug (ie, DPP4i users), and the same number of matched non-DPP4i users was selected. The 2 study groups were followed up until SJP diagnosis (International Classification of Diseases, Ninth Reversion, Clinical Modification code 719.4), health insurance policy termination, or the end of 2013. The incidence rate of SJP was estimated under the Poisson assumption. Multiple Cox proportional hazard model was used to estimate the covariate-adjusted hazard ratio and 95% CI of SJP in association with DPP4i use. Over a maximum follow-up of 5 years, 679 DPP4i users and 767 non-DPP4i users were newly diagnosed with SJP, representing incidence rates of 47.20 and 50.66 per 1000 person-years, respectively. Cox proportional hazard model indicated that DPP4i use slightly but nonsignificantly reduced the risk of SJP (adjusted hazard ratio: 0.92 [95% CI: 0.83-1.02]). Such null results were also observed among all age and sex stratifications and in a sensitivity analysis using all nonspecific arthropathies as the study endpoint. This study provides no support for the putative risk of SJP related to DPP4i use in type 2 diabetes patients during a maximum follow-up of 5 years.

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