From: Directly measured secondhand smoke exposure and COPD health outcomes
SHS exposure | COPD severity | Â | Physical health status (SF-12) | Â | Disease-specific QOL | Â | Dyspnea | Â |
---|---|---|---|---|---|---|---|---|
 | Bivariate | Multivariate | Bivariate | Multivariate | Bivariate | Multivariate | Bivariate | Multivariate |
Urine cotinine | Â | Â | Â | Â | Â | Â | Â | Â |
1st tertile | Referent | Referent | Referent | Referent | Referent | Referent | Referent | Referent |
2nd tertile | 1.2 (-2.5 to 4.8) | 0.2 (-3.6 to 3.9) | -2.3 (-8.9 to 4.2) | 0.4 (-5.6 to 6.5) | -0.4 (-3.2 to 2.4) | -0.7 (-3.5 to 2.0) | -0.1 (-0.7 to 0.6) | -0.3 (-0.9 to 0.3) |
3rd tertile | 5.4 (1.4 to 9.3) | 4.7 (0.6 to 8.9) | -7.8 (-14.9 to -0.7) | -5.6 (-12 to 1.0) | 2.9 (-0.16 to 6.0) | 2.3 (-0.7 to 5.4) | 1.1 (0.5 to 1.8) | 1.0 (0.4 to 1.7) |
Nicotine badge | Â | Â | Â | Â | Â | Â | Â | Â |
1st tertile | Referent | Referent | Referent | Referent | Referent | Referent | Referent | Referent |
2nd tertile | 0.2 (-3.6 to 3.9) | 0.6 (-3.2 to 4.4) | 3.0 (-3.7 to 9.8) | 2.7 (-3.4 to 8.8) | -1.6 (-4.5 to 1.4) | -1.7 (-4.6 to 1.2) | -0.2 (-0.8 to 0.5) | -0.2 (-0.8 to 0.4) |
3rd tertile | -1.4 (-5.3 to 2.5) | -1.1 (-5.0 to 2.8) | 3.2 (-3.8 to 10.1) | 1.9 (-4.3 to 8.2) | -2.1 (-5.1 to 0.9) | -1.6 (-4.5 to 1.3) | -0.2 (-0.9 to 0.5) | -0.1 (-0.7 to 0.5) |