Purpose: To investigate the impact of statin use on primary prevention of cardiovascular disease (CVD) in patients with type 2 diabetes mellitus (T2DM) in a dose-, class-, and use intensity-dependent manner.
Methods: We used an inverse probability treatment-weighted Cox hazards model, with statin use status as a time-dependent variable.
Results: Our results showed that statin use was associated with a significant reduction in CVD risk with an adjusted hazard ratio of 0.39. Pitavastatin was found to have the lowest CVD risk among the different classes of statins, followed by rosuvastatin, pravastatin, atorvastatin, simvastatin, fluvastatin, and lovastatin. Our analysis also revealed that a higher cumulative defined daily dose per year of statin was associated with a lower CVD risk. Additionally, a higher intensity of daily statin dose was associated with a lower CVD risk in patients with T2DM.
Conclusion: This study highlights the importance of statin use in reducing the risk of CVD in patients with T2DM, and the significance of dose, class, and intensity of statin use, in particular, pitavastatin class of statins was found to be the most effective in primary prevention of CVD in T2DM.
Keywords: Type 2 diabetes mellitus; cardiovascular disease; class of statin; dose-dependent; primary prevention; statin.