Table 5.
HR and 95% CI of new-onset asthma in men working in high-risk occupational groups together with ETS adjusted for age and atopy. Atopics and non-atopics are adjusted for age.
| Occupational group (men) | Person-years all | Asthma All/atopics/non atopics | All exposed, adjusteda HR (95% CI) | Atopics, adjustedb HR (95% CI) | Non-atopics, adjustedb HR (95% CI) | |||
|---|---|---|---|---|---|---|---|---|
| Referents | 57 668 | 67/38/29 | 1 | 1 | 1 | |||
| Cleaners, building caretakers | 1749 | 6/2/4 | 2.6 | 1.1–5.9c | NAd | NAd | 3.9 | 1.4–11.4 |
| Child and other personal care work | 1640 | 5/3/2 | 2.5 | 1.0–6.3 | 2.7 | 0.8–8.7 | NA | NA |
| Building workers not carpenters | 6456 | 9/7/2 | 1.3 | 0.6–2.5 | 1.9 | 0.8–4.2 | NA | NA |
| Plumbers and pipe fitters | 1209 | 5/1/4 | 4.0 | 1.6–10.0 | NA | NA | 6.0 | 2.1–17.2 |
| Agriculture and forestry | 2862 | 3/1/2 | 0.9 | 0.3–2.8 | NA | NA | NA | NA |
| Food and tobacco processing | 1365 | 4/3/1 | 2.7 | 0.97–7.3 | 3.8 | 1.2–12.3 | NA | NA |
| Welders and flame cutters | 1262 | 3/1/2 | 2.2 | 0.7–6.9 | NA | NA | NA | NA |
| Metal making and treating | 1604 | 4/3/1 | 2.1 | 0.8–5.8 | 2.9 | 0.9–9.4e | NA | NA |
| Other metal workers | 7506 | 8/4/4 | 1.0 | 0.5–2.0 | 1.0 | 0.3–2.7 | 1.0 | 0.4–2.8 |
| Electrical processors | 3891 | 6/1/5 | 1.4 | 0.6–3.1 | NA | NA | 2.5 | 0.96–6.4 |
| Spray painters | 363 | 3/1/2 | 7.5 | 2.4–24.1 | NA | NA | NA | NA |
| Remainder transportation, storage | 2074 | 5/3/2 | 2.2 | 0.9–5.5 | 2.8 | 0.9–9.3e | NA | NA |
| Remainder blue collar worker | 2596 | 4/1/3 | 1.3 | 0.5–3.5 | NA | NA | 2.1 | 0.6–6.8 |
| Drivers | 6189 | 6/2/4 | 0.9 | 0.4–2.0 | NA | NA | 1.2 | 0.4–3.5 |
| ETS | 1442 | 3/2/1 | 1.8 | 0.6–5.7 | NA | NA | NA | NA |
aadjusted for age and atopy.
badjusted for age.
cnot significant if also adjusted for smoking.
dNA=not applicable (<3 asthma cases).
esignificant if also adjusted for smoking.