Patterns of Statin Therapy Use and Associated Outcomes in Older Veterans Across Kidney Function

Area of Science:

• Gerontology
• Cardiovascular Medicine
• Neurology

Background:

• Atherosclerotic cardiovascular disease poses significant health risks.
• Older adults are often excluded from major statin therapy trials.
• Limited data exists on statin effects in individuals aged 75 and older.

Purpose of the Study:

• To assess the impact of initiating statin therapy on dementia incidence in adults 75+.
• To evaluate the effect of statin therapy on all-cause mortality in this age group.
• To examine these effects across the full range of kidney function.

Main Methods:

• Retrospective cohort study of 640,191 VA health system patients aged 75+.
• Statin initiation was analyzed against incident dementia and all-cause mortality.
• Cox proportional hazard analysis was employed to determine associations.

Main Results:

• Incident dementia rates were 4.7% in the no-statin group versus 3.2% in the statin group.
• Statin therapy was associated with a 22% mortality benefit.
• No significant treatment effect was observed across different kidney function levels.

Conclusions:

• Initiating statin therapy in older adults (75+) was not associated with incident dementia.
• Statin users demonstrated a significant survival advantage compared to non-users.
• Further research in diverse populations is recommended to validate these findings.