Table 2.
Deaths from lung cancer among individuals aged less than 70 years in Xuanwei cohort 1976-96, stratified by type of coal used in household stoves (“smoky coal” (bituminous) or “smokeless coal” (anthracite)), sex, and smoking habit
| Sex and smoking status | Smoky coal | Smokeless coal | |||
|---|---|---|---|---|---|
| No of cases/group | Mortality (95% CI)* | No of cases/group | Mortality (95% CI)* | ||
| Men: | |||||
| Never smoked | 88/1130 | 450 (355 to 545) | 0/387 | NA | |
| Ever smoked | 1067/13 102 | 488 (459 to 518) | 12/5031 | 13.1 (5.70 to 21.1) | |
| Women: | |||||
| Never smoked | 1124/13 035 | 527 (496 to 558) | 4/4536 | 4.7 (1.0 to 9.4) | |
| Ever smoked | 2/43 | NA | 0/8 | NA | |
*Age standardised mortality per 100 000 person years. The age structure of the group of smokeless coal users (n=9962) was used as the standard population.