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. 2008 Oct 8;2008(4):CD003822. doi: 10.1002/14651858.CD003822.pub2

Ikeda 1997.

Methods 4‐week single‐blind placebo phase; inclusion criteria= sitting DBP 95‐115 mm Hg after 2 and 4 weeks of placebo therapy, with the two readings not differing by more than 7 mm Hg; no more than 30% of patients enrolled could have been black; 12‐week double‐blind treatment, 6‐week fixed dose therapy, with BP measured at 3‐week intervals, titrated to response at week 6
Participants Losartan 50 mg: n=250(161 males,89 females); mean age=54.1 years; baseline DBP=102.2 mm Hg; 
 Placebo: n=116(74 males,42 females); mean age=53.8 years; baseline DBP=101.3 mm Hg
Interventions Losartan 50 mg once daily; 
 Placebo
Outcomes Change from baseline in trough sitting SBP/DBP using mercury sphygmomanometer
Notes Used week 6 BP data only; BP change reported, DBP SD of change reported only, endpoint BP reported, endpoint DBP SD reported only, baseline SD not reported; imputed overall trial mean SBP SD of change; DBP data from Table 2 and SBP data from Figure 2, p. 38; Jadad score=4; funding source= Merck
Risk of bias
Bias Authors' judgement Support for judgement
Allocation concealment? Unclear risk B ‐ Unclear