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Demographic and clinical information of individuals exposed to smoky coal emission in Xuan Wei, China (n=107)
| Variables | Cases (%) |
|---|---|
| Sex | |
| Male | 73 (68.2%) |
| Female | 34 (31.8%) |
| Age (mean ± s.d.) | 57.2 ± 10.8 |
| Smoking status | |
| Smoking | 72 (67.3%) |
| Non-smoking | 35 (32.7%) |
| Bronchitis status | |
| Bronchitis | 49 (45.8%) |
| Non-bronchitis | 58 (54.2%) |
