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. 2008 Oct 8;2008(4):CD003823. doi: 10.1002/14651858.CD003823.pub2

Whalen 1989.

Methods 2‐ to 4‐week single‐blind placebo run‐in; inclusion criteria= sitting DBP 95‐114 mm Hg after run‐in; 8‐week double‐blind treatment
Participants All patients: n=165; 
 Benazepril 20 mg: n=50; baseline sitting SBP=156 mmHg, DBP=103 mm Hg; 
 Benazepril 40 mg: n=50; baseline sitting SBP=154 mmHg, DBP=102 mm Hg; 
 Benazepril 80 mg: n=37; baseline sitting SBP=161 mmHg, DBP=104 mm Hg; 
 Placebo: n=50; baseline sitting SBP=154 mmHg, DBP=103 mm Hg
Interventions Benazepril 20 mg once daily; 
 Benazepril 40 mg once daily; 
 Benazepril 80 mg once daily; 
 Placebo
Outcomes Mean change from baseline in trough sitting SBP/DBP; 
 Mean change from baseline in peak sitting SBP/DBP
Notes BP change reported; SD of change not reported, endpoint BP and SD not reported; imputed overall trial mean SD of change; BP data from abstract; BP measurement device not reported; Jadad score=2; funding source= Ciba‐Geigy Inc.
Risk of bias
Bias Authors' judgement Support for judgement
Allocation concealment? Unclear risk B ‐ Unclear