Table 2
Observed and expected numbers of lung cancer deaths in an Amsterdam cohort of 2633 patients after gastrectomy (both sexes) in consecutive postoperative intervals compared with the general Dutch population
| Years since gastrectomy | No. in group | Observed lung cancer deaths (o) | Expected lung cancer deaths (e) | Ratio o/e | 95% CI | p Value (2 sided) |
|---|---|---|---|---|---|---|
| The period of follow up is 1935–95; the age range of the patients is 10–84 years. | ||||||
| CI, confidence interval. | ||||||
| 0–4 | 2619 | 8 | 7.3 | 1.1 | 0.5 to 2.2 | >0.05 |
| 5–14 | 2511 | 47 | 29.5 | 1.6 | 1.2 to 2.1 | <0.01 |
| 15–24 | 2087 | 78 | 47.4 | 1.6 | 1.3 to 2.1 | <0.001 |
| 25–34 | 1474 | 80 | 48.9 | 1.6 | 1.3 to 2.1 | <0.001 |
| 35–59 | 825 | 49 | 27.2 | 1.8 | 1.3 to 2.4 | <0.001 |
| 5–59 | 2511 | 254 | 152.9 | 1.7 | 1.5 to 1.9 | <0.001 |
