Those who had adhered to statin treatment vs those who had not were found to have 34% lower all-cause mortality rates. Fewer atherosclerotic cardiovascular disease events were reported in relation to adherence to statins. Irrespective of age and sex, reduced mortality and cardiovascular morbidity may be seen in older adults in relation to adherence to statins.

Internal Medicine Article: Statin use over 65 years of age and all-cause mortality: A 10-year follow-up of 19,518 people.