Change from baseline in (A) mean sitting systolic blood pressure (SBP) and (B) mean sitting diastolic blood pressure (DBP) at the end of study 2 in patients with stage 1 hypertension. The number of patients in each treatment group ranged from 69 to 90. The SD from the mean (systolic/diastolic, expressed in mm Hg) in each treatment group was as follows: placebo, 11.2/7.3; valsartan 160 mg, 12.5/8.4; valsartan 320 mg, 14.5/8.5; amlodipine 10 mg, 10.9/7.0; amlodipine 10 mg + valsartan 160 mg, 9.9/7.4; and amlodipine 10 mg + valsartan 320 mg, 11.7/7.1.