Table 1.
Histologically confirmed gastric non-cardia and cardia adenocarcinoma patients stratified by calendar period, age, sex, CCI, surgical treatment, chemotherapy, and cancer stage
| Variable | Gastric non-cardia adenocarcinoma n (%) | Gastric cardia adenocarcinoma n (%) | Total n (%) |
|---|---|---|---|
| Total | 18,713 (83.8) | 3617 (16.2) | 22,330 (100) |
| Calendar period | |||
| 1987–1991 | 4486 (24.0) | 677 (18.7) | 5163 (23.1) |
| 1992–1996 | 3720 (19.9) | 676 (18.7) | 4396 (19.7) |
| 1997–2001 | 3135 (16.8) | 657 (18.2) | 3792 (17.0) |
| 2002–2006 | 2928 (15.6) | 551 (15.2) | 3479 (15.6) |
| 2007–2011 | 2552 (13.6) | 612 (16.9) | 3164 (14.2) |
| 2012–2016 | 1892 (10.1) | 444 (12.3) | 2336 (10.5) |
| Age | |||
| > 50 | 1325 (7.1) | 265 (7.3) | 1590 (7.1) |
| 50–59 | 2243 (12.0) | 523 (14.5) | 2766 (12.4) |
| 60–69 | 4197 (22.4) | 929 (25.7) | 5126 (23.0) |
| 70–79 | 5910 (31.6) | 1126 (31.1) | 7036 (31.5) |
| 80–89 | 4398 (23.5) | 678 (18.7) | 5076 (22.7) |
| 90 + | 640 (3.4) | 96 (2.7) | 736 (3.3) |
| Sex | |||
| Female | 8864 (47.4) | 1085 (30.0) | 9949 (44.6) |
| Male | 9849 (52.6) | 2532 (70.0) | 12,381 (55.4) |
| CCI | |||
| 0 | 12,007 (64.2) | 2222 (61.4) | 14,229 (63.7) |
| 1 | 4058 (21.7) | 817 (22.6) | 4875 (21.8) |
| 2 | 1717 (9.2) | 375 (10.4) | 2092 (9.4) |
| 3 + | 931 (5.0) | 203 (5.6) | 1134 (5.1) |
| Surgery | |||
| Yes | 8293 (44.3) | 1320 (36.5) | 9613 (43.0) |
| No | 10,420 (55.7) | 2297 (63.5) | 12,717 (57.0) |
| Chemotherapy | |||
| No | 12,909 (69.0) | 2255 (62.3) | 15,164 (67.9) |
| Yes | 2758 (14.7) | 694 (19.2) | 3452 (15.5) |
| Missing | 3046 (16.3) | 668 (18.5) | 3714 (16.6) |
| Stage | |||
| Local | 3608 (19.3) | 599 (16.6) | 4207 (18.8) |
| Locally advanced | 2226 (11.9) | 469 (13.0) | 2695 (12.1) |
| Advanced | 7610 (40.7) | 1452 (40.1) | 9062 (40.6) |
| Unclear or missing | 5269 (28.2) | 1097 (30.3) | 6366 (28.5) |
CCI Charlson Comorbidity Index