. Author manuscript; available in PMC: 2016 Oct 5.

Published in final edited form as: Occup Environ Med. 2015 Apr 20;72(6):394–400. doi: 10.1136/oemed-2014-102696

Table 1.

Study Population Characteristics for 68 Participants with Complete RHI Data

Variable	All Participants (mean ± SD) N = 68	TRAP Exposed (mean ± SD) N = 48	WS Exposed (mean ± SD) N = 20	t Test P- Value^*
Age (yrs)	43.8 ± 12.8	40.8 ± 12.3	51.3 ± 10.9	<0.01
% Female	53%	54%	50%
BMI (kg/m²)	24.9 ± 4.0	24.9 ± 3.9	25.0 ± 4.3	0.73
Baseline Systolic BP (mmHg)	119.8 ± 13.3	119.9 ±14.1	119.4 ± 11.7	0.81
Diastolic BP (mmHg)	75.6 ± 10.5	75.4 ± 10.9	76.1 ± 9.5	0.83
% Time Open Windows	36.6 ± 39.4	45.0 ± 39.3	15.2 ± 31.3	<0.01
% Time at Home	74.4 ± 13.3	73.6 ± 12.8	76.3 ± 14.3	0.08

Definition of Abbreviations: BMI = body mass index; BP = blood pressure; TRAP = traffic-related air pollution; WS = woodsmoke

2-sample t test P-value for TRAP- vs. WS-exposed participants