Associations between occupational exposure and various predictors (health and sociodemographic factors) in the exposure models (used in the weights calculation)
| n=1284 | Model A: occupational exposure at time s=1* OR (95% CI) | Model B: occupational exposure at times s>1† OR (95% CI) | ||
|---|---|---|---|---|
| Known asthmagens | Irritants and/or low level of chemicals/allergens | Known asthmagens | Irritants and/or low level of chemicals/allergens | |
| Time period‡ | – | – | 0.80 (0.75 to 0.86) | 0.93 (0.87 to 0.99) |
| Occupational exposure ever up to the previous period (ref: no) | – | – | 1 | 1 |
| Known asthmagens | – | – | 149.65 (95.50 to 234.50) | 23.06 (13.67 to 38.92) |
| Irritants and/or low level of chemicals/allergens | – | – | 4.24 (2.41 to 7.46) | 58.93 (35.10 to 98.97) |
| Asthma ever up to the previous period | 1.08 (0.78 to 1.49) | 0.90 (0.60 to 1.36) | 0.74 (0.50 to 1.12) | 0.59 (0.37 to 0.93) |
| Gender (men vs women) | 1.90 (1.46 to 2.48) | 5.74 (1.19 to 8.11) | 1.27 (0.86 to 1.88) | 1.89 (1.21 to 2.96) |
| Cohort (ref: ≤1945) | 1 | 1 | 1 | 1 |
| (1945–1955) | 1.34 (0.88 to 2.04) | 1.49 (0.92 to 2.40) | 0.81 (0.49 to 1.31) | 0.89 (0.53 to 1.51) |
| (1955–1965) | 1.36 (0.86 to 2.16) | 2.17 (1.27 to 3.71) | 0.83 (0.45 to 1.51) | 0.84 (0.47 to 1.48) |
| (1965–1975) | 1.73 (1.05 to 2.85) | 2.81 (1.60 to 4.94) | 0.59 (0.31 to 1.12) | 0.69 (0.36 to 1.33) |
| >1975 | 1.13 (0.72 to 1.79) | 1.86 (1.13 to 3.06) | 0.47 (0.22 to 1.01) | 0.70 (0.34 to 1.44) |
| Age at the first hire | 0.77 (0.72 to 0.83) | 0.79 (0.74 to 0.84) | 1.00 (0.93 to 1.07) | 0.89 (0.83 to 0.95) |
| Smoking status at the previous period (ref: non-smoker) | 1 | 1 | 1 | 1 |
| Ex-smoker | 1.46 (0.47 to 4.49) | 0.79 (0.18 to 3.43) | 0.60 (0.36 to 1.01) | 0.87 (0.49 to 1.56) |
| Current smoker | 1.16 (0.86 to 1.57) | 1.28 (0.92 to 1.79) | 0.87 (0.59 to 1.29) | 1.34 (0.89 to 2.04) |
*Multinomial logistic regression of occupational exposure at the first 5-year employment period (s=1) according to factors reported for the period before first employment or time-invariant factors.
†Pooled multinomial logistic regression of occupational exposure at time periods s (s>1) according to factors at s-1 or time-invariant factors.
‡Time period included in the models as a continuous variable after checking for linearity.