TABLE 3.
Odd ratios and 95% CIs of smoking behaviors by multivariate logistic regression analysis a
| Characteristics | Smoking Initiation in nonsmokers | Point smoking in former smokers | Point cessation in smokers | Sustained cessation in smokers |
|---|---|---|---|---|
| Age | ||||
| <50 | Reference | Reference | Reference | Reference |
| 50–59 | 0.13 (0.01–1.45) | 0.24 (0.06–0.88) | 4.15 (1.11–15.46) | 3.84 (0.97–15.23) |
| 60–70 | 0.09 (0.01–1.07) | 0.17 (0.04–0.61) | 5.90 (1.59–21.90) | 4.63 (1.17–18.29) |
| 70‐ | 0.01 (0.00–0.23) | 0.12 (0.03–0.53) | 8.21 (1.87–36.04) | 7.94 (1.67–37.75) |
| Gender | ||||
| Male | Reference | Reference | Reference | Reference |
| Female | 0.003 (0.001–0.011) | 0.41 (0.07–2.32) | 7.23 (1.82–28.67) | 9.33 (2.36–36.92) |
| Annual household income(¥) | ||||
| <20,000 | Reference | Reference | Reference | Reference |
| 20,000–29,999 | 0.99 (0.31–3.20) | 1.02 (0.30–3.46) | 0.84 (0.51–1.39) | 0.72 (0.41–1.26) |
| 30,000–49,999 | 0.50 (0.18–1.37) | 0.66 (0.24–1.82) | 0.85 (0.54–1.36) | 0.78 (0.47–1.30) |
| 50,000‐ | 0.81 (0.24–2.72) | 0.77 (0.24–2.42) | 0.52 (0.30–0.88) | 0.47 (0.26–0.85) |
| Occupational exposure | ||||
| No | Reference | Reference | Reference | Reference |
| Yes | 0.50 (0.15–1.65) | 11.68 (4.81–28.38) | 1.08 (0.72–1.62) | 1.41 (0.91–2.18) |
| Prior lung disease | ||||
| No | Reference | Reference | Reference | Reference |
| Yes | 0.66 (0.13–3.32) | 1.07 (0.41–2.82) | 1.78 (1.03–3.05) | 1.89 (1.04–3.45) |
| Pack‐year | ||||
| <20 | — | Reference | Reference | Reference |
| 20–39 | — | 0.61 (0.27–1.34) | 0.59 (0.38–0.90) | 0.56 (0.35–0.89) |
| 40‐ | — | 0.39 (0.13–1.19) | 0.56 (0.35–0.89) | 0.52 (0.31–0.86) |
| Prior screening number | ||||
| 1 | Reference | Reference | Reference | Reference |
| 2 | 1.03 (0.19–5.61) | 3.08 (0.45–20.95) | 0.46 (0.24–0.88) | 0.50 (0.25–0.97) |
| 3 | 0.91 (0.19–4.22) | 3.56 (0.56–22.68) | 0.48 (0.27–0.87) | 0.45 (0.24–0.85) |
| 4 | 1.03 (0.19–5.66) | 2.16 (0.28–16.41) | 0.34 (0.17–0.64) | 0.32 (0.16–0.65) |
| 5 | 0.83 (0.10–6.83) | 2.32 (0.32–16.82) | 0.15 (0.08–0.28) | 0.14 (0.07–0.29) |
| Positive screening result | ||||
| At least one | Reference | Reference | Reference | Reference |
| No | 2.97 (1.27–6.94) | 1.07 (0.43–2.70) | 1.09 (0.72–1.67) | 0.94 (0.59–1.48) |
Note: Only statistically significant factors are shown in this table.
a
Adjusted for age, gender, education, income level, marriage, education, occupational exposure, prior lung disease, and prior screening number.