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

Yelin et al. Journal of Occupational Medicine and Toxicology 2006 1:2   doi:10.1186/1745-6673-1-2