Demographics of the surgically treated patients with gastric cancer in Finland 1987–2016
| Patients’ number (%) | |
| Total | 10 457 (100) |
| Age at surgery (years) | |
| ≤50 | 1017 (9.7) |
| 51–60 | 1605 (15.3) |
| 61–70 | 2856 (27.3) |
| 71–80 | 3479 (33.3) |
| >80 | 1500 (14.3) |
| Sex | |
| Male | 5695 (54.5) |
| Female | 4762 (45.5) |
| Education (years) | |
| ≤12 | 1960 (18.7) |
| 13–15 | 994 (9.5) |
| >15 | 296 (2.8) |
| Missing | 7207 (68.9) |
| Charlson Comorbidity Index | |
| 0 | 6731 (64.4) |
| 1 | 2408 (23.0) |
| 2 | 892 (8.5) |
| 3 | 287 (2.7) |
| ≥4 | 139 (1.3) |
| Stage | |
| Local | 3208 (30.7) |
| Locally advanced | 2146 (20.5) |
| Advanced | 2444 (23.4) |
| Unclear | 1995 (18.3) |
| Missing | 744 (7.1) |
| Histology | |
| Adenocarcinoma | 9154 (87.6) |
| Other | 559 (5.3) |
| Missing | 744 (7.1) |