. Author manuscript; available in PMC: 2009 Sep 25.

Published in final edited form as: Am J Hypertens. 2008 Sep 25;21(12):1324–1329. doi: 10.1038/ajh.2008.292

Table 1.

Baseline resting means and standard deviations of demographic and physiological variables for all participants (n = 54) and those stratified by mean 24-hr systolic blood pressure (SBP) in the lower (SBP = 108.7±5.7), middle (SBP = 124.2±4.1) and upper (SBP = 139.7±8.7) tertiles.

	ALL (n=54)	LOWER TERCILE (n=18)	MIDDLE TERCILE (n=18)	UPPER TERCILE (n=18)
Age (yr)	53.4±7.7	50.2±9.2	54.9±6.9	54.2±6.3
Body surface area	1.79±14.47	1.68±0.12	1.79±0.15	1.91±0.20
Body Mass Index	26.82±4.55	25.30±3.74	26.34±3.49	28.44±5.83
Systolic BP (mmHg)	132.7 ± 15.1	112.6 ± 10.0	125.8 ± 7.4	142.4 ± 8.3
Diastolic BP (mmHg)	80.2 ± 9.3	73.0 ± 6.4	77.1 ± 6.4	85.1 ± 8.3
Heart rate (bpm)	66.4 ± 8.0	66.8 ± 4.9	66.8 ± 9.0	64.2 ± 6.1
Breathing rate (per min)	13.9±2.5	14.0±2.4	14.1±2.0	13.7±3.0
Tidal volume (ml)	418±133	367±128	386±116	497±125
Min vent (L/min)	5.12±1.37	4.78±1.58	5.18±1.49	5.41±1.00
End tidal CO₂ (mmHg)	37.4±3.8	38.3±4.5	36.7±3.7	36.9±3.5