Table 2.
Crude lung cancer incidence rates by sex, smoking, length of school attendance, and fruit intake (based on data collected at enrollment of 52,970 cohort members).
| Characteristic | Person-years at risk | No. of cases | Crude lung cancer incidence rate per 100,000 person-years |
|---|---|---|---|
| Sex
| |||
| Male | 241,153 | 300 | 124 |
| Female | 269,751 | 292 | 108 |
| Smoking
| |||
| Nonsmoker | 327,836 | 100 | 30 |
| Present smoker | 183,068 | 492 | 270 |
| School attendance (years)
| |||
| < 8 | 168,332 | 298 | 177 |
| ≥ 8 | 342,572 | 294 | 86 |
| Fruit intake (g/day)
| |||
| < 100 | 172,256 | 283 | 164 |
| ≥ 100 | 338,648 | 309 | 91 |