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QUESTION: In patients with a history of stroke or transient ischaemic attack (TIA), is perindopril alone or combined with indapamide more effective than placebo for reducing fatal or non-fatal stroke?
Design
Two* randomised (allocation concealed†), blinded {patients, clinicians, data collectors, outcome assessors, data analysts, and manuscript writers}‡,† placebo controlled trials with a mean follow up of 3.9 years (Perindopril Protection against Recurrent Stroke Study [PROGRESS]).
Setting
172 centres from 10 countries.
Patients
6105 patients (mean age 64 y, 70% men) who had a history of stroke or TIA in the previous 5 years, had no definite indication for or contraindication to an angiotensin-converting enzyme (ACE) inhibitor, and were clinically stable for ≥ 2 weeks after their most recent vascular event. 6102 patients (> 99%) completed follow up for fatal events.
Intervention
Some patients were …