Table 4.

Effects of anti-hypertensive therapy on the ambulatory BP profile

Variable	Olmesartan, n=22	Non-ARB, n=23	P-value
24 h
Systolic BP
Baseline (mm Hg); mean (s.d.)	142.6±14.4	135.0±11.3	0.036
A/B ratio; mean (s.d.)	0.93±0.07	0.99±0.08	0.053
Diastolic BP
Baseline (mm Hg); mean (s.d.)	83.6±10.4	78.2±7.5	0.045
A/B ratio; mean (s.d.)	0.92±0.07	0.98±0.07	0.017
Daytime
Systolic BP
Baseline (mm Hg); mean (s.d.)	146.6±14.8	140.5±11.5	0.180
A/B ratio; mean (s.d.)	0.94±0.07	0.98±0.09	0.261
Diastolic BP
Baseline (mm Hg); mean (s.d.)	86.3±10.8	81.5±8.4	0.104
A/B ratio; mean (s.d.)	0.93±0.07	0.97±0.07	0.105
Nighttime
Systolic BP
Baseline (mm Hg); mean (s.d.)	133.4±15.9	123.9±13.9	0.031
A/B ratio; mean (s.d.)	0.91±0.10	1.00±0.08	0.001
Diastolic BP
Baseline (mm Hg); mean (s.d.)	77.8±10.7	71.8±7.8	0.013
A/B ratio; mean (s.d.)	0.90±0.11	0.98±0.10	0.024
Morning
Systolic BP
Baseline (mm Hg); mean (s.d.)	144.6±16.8	138.9±16.9	0.107
A/B ratio; mean (s.d.)	0.95±0.11	1.02±0.15	0.095
Diastolic BP
Baseline (mm Hg); mean (s.d.)	84.1±12.2	80.9±10.5	0.340
A/B ratio; mean (s.d.)	0.95±0.12	1.03±0.13	0.068

Abbreviations: BP, blood pressure; A/B ratio, after-treatment/baseline ratio.