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The factors associated with insulin nonpersistence in persons with type 2 diabetes
Fu-Shun Yen1, James Cheng-Chung Wei2, Jia-Sin Liu3
1Dr. Yen's Clinic, Taoyuan City, Taiwan.
Aims:
Implementation of insulin therapy among those with diabetes is often suboptimal as a result of non-adherence or non-persistence. Studies regarding factors leading to insulin nonpersistence are limited. Therefore, we conducted this retrospective cohort study to determine the factors affecting insulin nonpersistence.
Methods:
A total of 274,852 persons with type 2 diabetes mellitus under insulin therapy during the period 2000-2014 were enrolled. Persons who stopped insulin therapy for >90 days were defined as having insulin nonpersistence. We searched for factors associated with insulin nonpersistence during the long-term follow-up period.
Results:
According to the multiple Cox regression model with a mean follow-up of 13.9 years, the factors associated with higher risk of insulin nonpersistence were age <40 years, men, residing in a rural area, Charlson comorbidity index score = 4, use of two or more oral antidiabetic drugs, and hypoglycemia during follow-up. The Kaplan-Meier graph showed that patients aged <40 years had significantly less insulin persistence.
Conclusions:
This nationwide cohort study indicated that persons with young-onset type 2 diabetes, less medical resources, and more comorbidities are at risk of insulin nonpersistence. Healthcare providers should regularly assess insulin persistence and help patients who are having difficulty with insulin-taking.
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