Odds ratios* for symptoms in relation to non-participation in follow up surveys for cotton and silk workers over 15 years
| Cotton | Silk | |
|---|---|---|
| *The GEE analysis was modelled using all available data of 429 cotton and 449 silk workers over 15 years, with adjustment for age, years worked, and smoking habit. | ||
| †Positive report for any symptoms including chest tightness, bronchitis, cough, and dyspnoea. | ||
| Statistically significant odds ratios italicised. 95% confidence limits shown in parentheses. | ||
| Byssinosis | 1.6 (0.91 to 2.71) | – |
| Chest tightness | 0.6 (0.41 to 1.02) | 0.6 (0.32 to 1.20) |
| Chronic bronchitis | 0.8 (0.46 to 1.25) | 0.4 (0.25 to 0.73) |
| Chronic cough | 0.8 (0.49 to 1.41) | 0.5 (0.27 to 0.82) |
| Dyspnoea | 0.8 (0.53 to 1.29) | 0.6 (0.38 to 0.90) |
| Any symptom† | 0.7 (0.51 to 1.09) | 0.5 (0.37 to 0.77) |