Table 1.
Baseline participant characteristics (N=215).
| Participant characteristics | Total sample (N=215) | Intervention group (n=95) | Control group (n=120) | P a |
| Race (nonwhite), n (%) | 147 (68.4) | 77 (81) | 70 (58.3) | <.001 |
| Gender (female), n (%) | 146 (67.9) | 66 (70) | 80 (66.7) | .66 |
| Age (years), mean (SD) | 43.90 (12.85) | 46.75 (11) | 41.65 (13.62) | .004 |
| Education (>high school), n (%) | 160 (74.4) | 55 (58) | 105 (87.5) | <.001 |
| BMI (kg/m2), mean (SD) | 30.72 (7.81) | 31.61 (8) | 30.02 (7.90) | .14 |
| CO level (ppm), mean (SD) | 6.49 (10.18) | 9.2 (11) | 4.35 (8.46) | <.001 |
aVariables that were found to differ significantly between the intervention and control groups were included as covariates in adjusted analyses.