Table 1.
Demographic characteristics of M1 Stage IV gastric cancer patients by different treatment modalities from 2008 to 2015 in Taiwan.
| Analysis variables | Total | Chemotherapy alone | Surgery alone | Chemotherapy + surgery | Supportive care | P-value |
|---|---|---|---|---|---|---|
| N (%)a | N (%)a | N (%)a | N (%)a | N (%)a | ||
| Total | 5599 | 2963 (52.9)b | 389 (6.9)b | 1017 (18.2)b | 1230 (22.0)b | |
| Sex | ||||||
| Men | 3429 (61.2) | 1799 (60.7) | 240 (61.7) | 608 (59.8) | 782 (63.6) | 0.249 |
| Women | 2170 (38.8) | 1164 (39.3) | 149 (38.3) | 409 (40.2) | 448 (36.4) | |
| Age at diagnosis (years) | ||||||
| < 55 | 1334 (23.8) | 867 (29.3) | 52 (13.4) | 299 (29.4) | 116 (9.4) | < 0.001 |
| 55–64 | 1207 (21.6) | 710 (24.0) | 57 (14.7) | 296 (29.1) | 144 (11.7) | |
| 65–74 | 1217 (21.7) | 667 (22.5) | 85 (21.9) | 245 (24.1) | 220 (17.9) | |
| 75 + | 1841 (32.9) | 719 (24.3) | 195 (50.1) | 177 (17.4) | 750 (61.0) | |
| Year of diagnosis | ||||||
| 2008–2009 | 1218 (21.8) | 596 (20.1) | 98 (25.2) | 214 (21.0) | 310 (25.2) | 0.001 |
| 2010–2011 | 1467 (26.2) | 748 (25.2) | 92 (23.7) | 285 (28.0) | 342 (27.8) | |
| 2012–2013 | 1421 (25.4) | 777 (26.2) | 102 (26.2) | 261 (25.7) | 281 (22.8) | |
| 2014–2015 | 1493 (26.7) | 842 (28.4) | 97 (24.9) | 257 (25.3) | 297 (24.1) | |
| Tumor grade | ||||||
| Low grade | 1036 (18.5) | 470 (15.9) | 105 (27.0) | 229 (22.5) | 232 (18.9) | < 0.001 |
| High grade | 2947 (52.6) | 1388 (46.8) | 271 (69.7) | 735 (72.3) | 553 (45.0) | |
| Undefined | 1616 (28.9) | 1105 (37.3) | 13 (3.3) | 53 (5.2) | 445 (36.2) | |
| Hospital level | ||||||
| Regional hospital | 2100 (37.5) | 1000 (33.7) | 180 (46.3) | 399 (39.2) | 521 (42.4) | < 0.001 |
| Medical center | 3499 (62.5) | 1963 (66.3) | 209 (53.7) | 618 (60.8) | 709 (57.6) | |
| Surgical resection status | ||||||
| R0 | 978 (17.5) | 0 | 256 (65.8) | 722 (71.0) | 0 | < 0.001 |
| R1 | 341 (6.1) | 0 | 105 (27.0) | 236 (23.2) | 0 | |
| R2 | 87 (1.6) | 0 | 28 (7.2) | 59 (5.8) | 0 | |
| No surgery | 4193 (74.9) | 2963 (100.0) | 0 (0.0) | 0 (0.0) | 1230 (100.0) | |
aPercentages are vertically summed up to 100% for each analysis variable.
bPercentages are horizontally summed up to be 100%.