|  | Death from CHD |  |
---|
 |  | yes | no | ∑ |
---|
Exposure | smoker | 69 | 10263 | 10332 |
 | non-smoker | 100 | 24008 | 24108 |
 | ∑ | 169 | 34271 | 34440 |
- The absolute numbers in this table are calculated using the sample size of the study (34440), the annual CHD death rates for smokers (Ï€1 = 0.669%) and non-smokers (Ï€0 = 0.413%), and a hypothetical prevalence of smoking of 30% in the study population.