Why the study?
Does medical treatment after 1990 (including beta-blockers and ACE inhibitors) improve survival in patients with dilated cardiomyopathy compared to treatment before 1989?
Does medical treatment after 1990 (including beta-blockers and ACE inhibitors) improve survival in patients with dilated cardiomyopathy compared to treatment before 1989?
Survival of patients with dilated cardiomyopathy significantly improved in the 1990s, likely driven by the increased use of beta-blockers and ACE inhibitors.
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Post-1990 survival gains in dilated cardiomyopathy may relate to beta-blockers and ACE inhibitors; leaves open causal inference from this observational cohort.
Azuma et al. (1999) studied this question.
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