Table 3.

Simultaneous impact of achieved SBP and treatment assignment to irbesartan (versus amlodipine or placebo) on risk for CHF

Independent Variable(s)RR (95% CI)P Value
Lower achieved SBP (per 20 mmHg)0.75 (0.63 to 0.89)0.001
Assignment to irbesartan (compared with placebo or amlodipine)0.71 (0.54 to 0.93)0.013
Both lower SBP and irbesartan0.53 (0.38 to 0.73)<0.0001