Document Classification

Section Type: RESULTS

Text: The mean fall in SBP and DBP was comparable for study treatments (atenolol 50 mg, atenolol 25 mg + chlorthalidone 6. 25 mg and atenolol 25 mg + amlodipine 2. 5 mg) (p = 0. 337 for SBP and p = 0. 054 for DBP) at week 12 and (p = 0. 744 for SBP and p = 0. 855 for DBP) at week 20 ; also, the percentage of responders was comparable for the three study treatment groups (p = 0. 799) indicating that the low-dose chlorthalidone + atenolol combination is noninferior to the high-dose atenolol alone and atenolol + amlodipine combination.