| If biomass smoke < n years | If tobacco smoke < m pack-years | |||||||
---|---|---|---|---|---|---|---|---|---|
Tobacco smoke (m), pack-years | Exposure to biomass smoke (n), years | B4 | SE | β | P value | \( {\mathrm{B}}_5^{\prime } \) | SE | β′ | P value |
10 | 10 | −4.22 | 1.79 | −0.12 | 0.019 | −0.15 | 1.87 | −0.01 | 0.937 |
15 | −3.48 | 1.48 | −0.10 | 0.019 | 0.37 | 1.83 | 0.02 | 0.840 | |
20 | −3.51 | 1.44 | −0.11 | 0.015 | −0.14 | 1.83 | −0.01 | 0.941 | |
25 | −4.20 | 1.32 | −0.13 | 0.002 | −3.83 | 1.92 | −0.14 | 0.048 | |
30 | −4.12 | 1.30 | −0.13 | 0.002 | −2.24 | 2.00 | −0.08 | 0.263 | |
20 | 10 | −4.36 | 1.43 | −0.15 | 0.003 | 0.51 | 1.59 | 0.02 | 0.749 |
15 | −3.60 | 1.24 | −0.13 | 0.004 | 0.74 | 1.58 | 0.03 | 0.639 | |
20 | −3.62 | 1.21 | −0.13 | 0.003 | 0.38 | 1.60 | 0.02 | 0.811 | |
25 | −4.39 | 1.11 | −0.15 | < 0.001 | −3.25 | 1.68 | −0.12 | 0.054 | |
30 | −4.01 | 1.09 | −0.14 | < 0.001 | −1.38 | 1.73 | −0.05 | 0.424 |