Table 3.
Cox Proportional Hazards Models for Years Until Cessation of Work Activities Until Age 65, among Persons with a Work History
| Hazard Ratio (95% CI) | |||||
| Model | COPD | Asthma | Rhinitis | Non- Respiratory | No Chronic Conditions |
| Disease Categories and Age | 1.99 (1.66, 2.39) | 1.48 (1.13, 1.94) | 1.34 (1.06, 1.69) | 1.33 (1.12, 1.57) | ref. |
| Disease Categories, Age, and Demographic Characteristics1 | 1.86 (1.55, 2.23) | 1.46 (1.12, 1.92) | 1.37 (1.08, 1.73) | 1.28 (1.08, 1.52) | ref. |
| Disease Categories, Age, and Demographic and Work Characteristics2 | 1.83 (1.52, 2.21) | 1.45 (1.11, 1.90) | 1.37 (1.08, 1.73) | 1.28 (1.08, 1.51) | ref. |
1 Demographic characteristics include gender, race/ethnicity, marital status, and extent of formal education
2 Work characteristics include occupation, industry, and exposure to vapors, gases, dust, or fumes