Study	Reason for exclusion
CONSENSUS 1987	post hoc retrospective analysis of ACE inhibitor trial
EPICAL 2002	outcomes for patients in sinus rhythm were not reported separately
Fuster 1981	observational, non‐randomised or controlled, cohort study
Kyrle 1985	observational, non‐randomised or controlled, cohort study
Natterson 1993	observational, non‐randomised or controlled, cohort study
PROMISE 1993	observational, non‐randomised or controlled, cohort study
SAVE 1997	post hoc retrospective analysis of ACE inhibitor trial
SOLVD 1998	post hoc retrospective analysis of ACE inhibitor trial
V‐HeFT 1993	post hoc retrospective analysis of ACE inhibitor trial
Visser 2004	cohort study of people on anticoagulants for varied diagnoses
WARCEF 2012	a study comparing warfarin to aspirin, not to placebo
WATCH 2009	a study comparing warfarin to aspirin or clopidogrel, not to placebo
Wishart 1948	case series, conducted over 50 years ago in heterogeneous CHF population (n=61), and methodology considered inappropriate