Table 5
Odds of occupational asthma at company A by duration from employment to symptoms (unadjusted estimates)
| Asthma ⩽1 y | Asthma >1 y | ||||||
|---|---|---|---|---|---|---|---|
| Odds ratio | 95% CI | p Value | Odds ratio | 95% CI | p Value | ||
| 8 h TWA isocyanate exposure (for 0.1 ppb increase) | 1.5 | 0.82 to 2.7 | 0.18 | 1.04 | 0.95 to 1.13 | 0.41 | |
| Smoking at employment | 2.4 | 0.38 to 15.0 | 0.36 | 2.0 | 0.60 to 6.78 | 0.25 | |
| History of hay fever, eczema, or asthma | 2.6 | 0.43 to 16.0 | 0.29 | 4.3 | 0.60 to 22.8 | 0.08 | |
