In the S-group , change in systolic BP at 2 and 4 weeks were -4.3 mm Hg ( 95 % confidence interval [ CI ] -8.3 to -0.4 ; P = .032 ) and -5.2 mm Hg ( 95 % CI -10.1 to -0.3 ; P = .039 ) , both statistically significant .
