Adjusted† ORs (with 95% CI) of COPD associated with cumulative COE exposure and smoking
| Cigarette-years of smoking | |||||
|---|---|---|---|---|---|
| 0 | 1–99 | 100–199 | 200–299 | ⩾300 | |
| †Adjusted for sex, age (<30, 30–34, 35–39, and ⩾40 years), height (<164, 164–167, 168–171, and ⩾172 cm) by logistic regression. | |||||
| Control | 1 (referent) | 2.28 (0.31 to 16.56) | 2.65 (0.41 to 17.26) | 2.22 (0.33 to 14.82) | 7.51 (1.11 to 50.89) |
| Low exposure | 2.77 (0.54 to 14.33) | 3.62 (0.59 to 22.26) | 4.39 (0.63 to 30.62) | 5.35 (0.76 to 37.65) | 11.08 (2.11 to 58.11) |
| Moderate exposure | 3.98 (0.75 to 21.24) | 5.68 (0.98 to 32.89) | 15.92 (2.80 to 90.60) | 17.58 (3.13 to 98.78) | 19.05 (3.81 to 95.31) |
| High exposure | 5.92 (1.20 to 29.32) | 10.53 (2.02 to 54.90) | 14.75 (2.84 to 76.68) | 27.13 (5.09 to 144.69) | 58.12 (11.07 to 305.12) |