Predicting ischaemic heart disease with infectious and non-infectious respiratory diseases
| Workers | Infectious respiratory diseases* | Non-infectious respiratory diseases† | |||
|---|---|---|---|---|---|
| RR | 95% CI | RR | 95% CI | ||
| Other explanatory variables in the model were age, smoking, dust exposure, hypertension, and congestive heart failure. | |||||
| *Chronic bronchitis, pneumonia, and upper respiratory infections. | |||||
| †Bronchial asthma, emphysema, and pneumoconiosis. | |||||
| RR, rate ratio; 95% CI, 95% confidence interval. | |||||
| Granite workers | 1.9 | (1.38 to 2.72) | 1.1 | (0.77 to 1.67) | |
| Cotton mill workers | 1.1 | (0.59 to 2.12) | 1.9 | (0.87 to 4.00) | |
| Foundry workers | 2.1 | (1.48 to 2.93) | 1.2 | (0.85 to 1.83) | |
| Iron foundry workers | 1.7 | (1.16 to 2.35) | 1.6 | (0.98 to 2.70) | |
| Metal product workers | 1.0 | (0.61 to 1.61) | 1.0 | (0.45 to 2.20) | |
| Electrical workers | 1.7 | (0.91 to 3.37) | 5.4 | (1.98 to 14.87) | |