Table 4.
Baseline smoking characteristics | Definition 1 (≥1 data source) |
Linear trend | Definition 2 (≥2 data sources) |
Linear trend | Self-report only |
Linear trend | |||
---|---|---|---|---|---|---|---|---|---|
OR | 95% CI | p value | OR | 95% CI | p value | OR | 95% CI | p value | |
Smoking status | 0.04 | 0.17 | 0.17 | ||||||
Never | 1.00 | reference | 1.00 | reference | 1.00 | reference | |||
Former | 0.84 | 0.59–1.19 | 0.82 | 0.48–1.40 | 0.94 | 0.57–1.55 | |||
Current | 0.50 | 0.26–0.95 | 0.49 | 0.17–1.41 | 0.45 | 0.17–1.12 | |||
Total pack-years | 0.03 | 0.12 | 0.22 | ||||||
Never smoker | 1.00 | reference | 1.00 | reference | 1.00 | reference | |||
1st quartile (0–13) | 0.82 | 0.57–1.50 | 1.01 | 0.49–2.11 | 1.06 | 0.54–2.07 | |||
2nd quartile (14–27) | 0.95 | 0.58–1.56 | 0.87 | 0.39–1.93 | 0.95 | 0.47–1.95 | |||
3rd quartile (28–49) | 0.72 | 0.42–1.23 | 0.86 | 0.40–1.84 | 0.84 | 0.41–1.73 | |||
4th quartile (≥50) | 0.53 | 0.29–0.96 | 0.44 | 0.16–1.14 | 0.57 | 0.25–1.32 | |||
Years since quitting | 0.33 | 0.38 | 0.34 | ||||||
Never smoker | 1.00 | reference | 1.00 | reference | 1.00 | reference | |||
30 | 1.01 | 0.61–1.68 | 0.93 | 0.43–2.01 | 1.21 | 0.59–2.42 | |||
20–29 | 0.92 | 0.54–1.58 | 1.03 | 0.47–2.22 | 1.02 | 0.47–2.14 | |||
10–19 | 0.76 | 0.43–1.34 | 0.83 | 0.36–1.91 | 0.97 | 0.46–2.05 | |||
<10 | 0.67 | 0.36–1.25 | 0.54 | 0.19–1.57 | 0.69 | 0.29–1.68 | |||
Current smoker | 0.50 | 0.26–0.95 | 0.49 | 0.17–1.41 | 0.45 | 0.18–1.18 |
Adjusted for age, sex and African American race; pack-years: quartiles of total pack-years determined among non-PD smokers.