. Author manuscript; available in PMC: 2016 Jan 31.

Published in final edited form as: Pharmacogenomics J. 2014 Nov 25;15(4):310–315. doi: 10.1038/tpj.2014.69

Table 1.

Demographic characteristic and outcome measures

Covariates	Caucasians n = 64	African Americans n = 42	All n = 106
Age, years	26.9 ± 6.8	28.1 ± 8.0	27.3± 7.3
Female sex, n (%)	31 (48)	18 (43)	49 (46)
Family history of Hypertension, n (%)	25 (39)	20 (48)	45 (43)
Resting SBP, mmHg	110.3 ± 11	111.1 ± 9.5	110.6 ± 10.4
Resting DBP, mmHg	60.7 ± 6.8	63.4 ± 8.0	61.8 ± 7.4
Resting HR, bpm^*	59.0 ± 8.2	63.7 ± 8.0	60.9 ± 8.4
Baseline Plasma norepinephrine, pg/ml	162.3 ± 58.0	179.5 ± 70.8	168.9 ± 63.3
Baseline Plasma epinephrine, pg/ml	18.5 ± 12.5	21.0 ± 15.6	19.4 ± 13.7
BMI, kg/m²^*	24.3 ± 3.8	26.8 ± 5.4	25.3 ± 4.6
ED_50, ng/min, Mean (95%CI)^*	310 (222 – 434)	172 (115 – 256)	245 (190 – 318)
E_max, %, Median (IQR)	85 (75 – 95)	89 (82 – 98)	87 (76 – 96)

Data presented as mean ± SD except otherwise stated. SBP = Systolic blood pressure; DBP = Diastolic blood pressure; HR = Heart rate

P value < 0.05 comparing Caucasians and African Americans.