Is statin use in COPD patients associated with a reduction in mortality : a national cohort study?
Statin use is associated with a 30% reduction in all-cause mortality at 3-4 years after first admission for COPD, irrespective  of a past history of cardiovascular disease and diabetes.
Our study demonstrates that HRT has a protective effect on the occurrence of venous ulcers of the lower limbs. Adjusting for prior DVT moves the estimate closer to the null. DVT is a strong contraindication for HRT and therefore must be considered in order to eliminate confounding by contraindication.