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

Yebes 1993.

Methods 4‐week single‐blind placebo washout; inclusion criteria= sitting DBP > 100 and < 115 mm Hg after washout; 8‐week double‐blind treatment, randomized to either placebo or quinapril 20 mg once daily for 4 weeks with optional titration to 40 mg once daily for subsequent 4 weeks based on diastolic response
Participants Quinapril: n=10; mean age=55(14.9) years; baseline SBP=161(22.2) mm Hg, DBP=105(5.6) mm Hg; 
 Placebo: n=11; mean age=50(9.9) years; baseline SBP=154(20.6) mm Hg, DBP=103(5.0) mm Hg
Interventions Quinapril 20 mg once daily; 
 Placebo
Outcomes Mean change from baseline in sitting SBP/DBP
Notes Used week 4 BP data only; BP change and SD of change reported, endpoint BP and SD reported; time of dosing not reported; time of BP measurement not reported; SBP data from Table IA, p. 321, DBP data from Table IIA, p. 323; time of BP measurement not reported; BP measurement device not reported; Jadad score=3; funding source= not reported
Risk of bias
Bias Authors' judgement Support for judgement
Allocation concealment? Unclear risk B ‐ Unclear