TABLE 5.
Multivariate Logistic Regression Models for Lung Cancer Among Black and White Women and Men Who Worked in Comparable Job Categories
| Women
|
Men
|
|||||||
|---|---|---|---|---|---|---|---|---|
| Black
|
Whites
|
Black
|
Whites
|
|||||
| Independent Variable | AOR | 95% CI | AOR | 95% CI | AOR | 95% CI | AOR | 95% CI |
| Main predictor variable | ||||||||
| Category of job held the longest | ||||||||
| Professional-technical-managerial | Referent | Referent | Referent | Referent | ||||
| Clerical-sales | 4.07 | 1.44–11.48 | 1.32 | 0.69–2.55 | 0.64 | 0.15–2.75 | 1.14 | 0.48–2.73 |
| Service | 5.15 | 1.62–16.34 | 1.10 | 0.39–3.15 | 2.48 | 0.82–7.42 | 0.83 | 0.33–2.07 |
| Agricultural-fishery-forestry-processing-machine trades-benchwork* | 1.72 | 0.45–6.61 | 0.51 | 0.09–2.66 | 1.33 | 0.45–3.91 | 0.93 | 0.40–2.15 |
| Structural work | † | † | 3.23 | 0.92–11.37 | 0.63 | 0.26–1.53 | ||
| Miscellaneous‡ | 7.82 | 1.08–56.25 | 3.43 | 1.02–11.50 | 2.54 | 0.87–7.35 | 2.05 | 0.52–8.13 |
| Covariate | ||||||||
| Smoking status | ||||||||
| Never | Referent | Referent | Referent | Referent | ||||
| Former | 4.56 | 1.23–16.82 | 1.03 | 0.43–2.47 | 1.79 | 0.50–6.40 | 2.50 | 1.03–6.06 |
| Current | 8.46 | 2.02–35.48 | 4.10 | 1.23–13.67 | 5.07 | 1.24–20.73 | 6.39 | 2.05–19.95 |
| Packyears of cigarettes smoked | 1.05 | 1.02–1.09 | 1.06 | 1.04–1.09 | 1.03 | 1.01–1.06 | 1.02 | 1.01–1.04 |
| ETS exposure§ | ||||||||
| None | Referent | Referent | Referent | Referent | ||||
| Low | 0.93 | 0.08–10.65 | 0.67 | 0.15–2.99 | 1.69 | 0.29–9.88 | 0.33 | 0.07–1.55 |
| Moderate | 2.74 | 0.27–27.63 | 0.99 | 0.23–4.23 | 0.96 | 0.15–5.88 | 0.30 | 0.06–1.38 |
| High | 4.38 | 0.42–45.57 | 0.93 | 0.20–4.29 | 1.97 | 0.31–12.32 | 0.44 | 0.09–2.02 |
| Age (yr) | 0.94 | 0.89–0.98 | 1.04 | 1.00–1.07 | 0.95 | 0.90–0.99 | 1.00 | 0.97–1.03 |
| History of lung illness3 | 2.15 | 0.61–7.62 | 3.90 | 1.33–11.59 | 2.40 | 0.57–10.01 | 1.53 | 0.67–3.50 |
| Family history of cancer | ¶ | ¶ | 0.75 | 0.35–1.57 | 2.14 | 1.13–4.03 | ||
*
Pooled into one category because of sparse numbers.
†
Number too small for analysis.
‡
Includes truck driver, transportation, packaging, and material handling occupations.
§
Environmental tobacco smoke (ETS) exposure: none, no exposure in childhood, adulthood, or workplace; low, any one of those three exposures; moderate, two of those three exposures; high, all of those three exposures.
||
Excluding asbestosis.
¶
Family history of cancer was not significant in women and therefore it was not included in the model.
AOR indicates adjusted odds ratio; CI, confidence interval.