Table 1.
The Baseline Demographics and Clinical Characteristics.
| Variable | Before PSM | After PSM | ||||
|---|---|---|---|---|---|---|
| NIPS | NSC | P | NIPS | NSC | P | |
| n = 78 (%) | n = 108 (%) | n = 71 (%) | n = 71 (%) | |||
| Gender | 0.673 | 0.389 | ||||
| Male | 46 (59.0) | 67 (62.0) | 46 (64.8) | 41 (57.7) | ||
| Female | 32 (41.0) | 41 (38.0) | 25 (35.2) | 30 (42.3) | ||
| Age (ys) | 0.913 | 0.977 | ||||
| <40 | 16 (20.5) | 21 (19.4) | 15 (21.1) | 16 (22.5) | ||
| 41-59 | 39 (50.0) | 52 (48.1) | 37 (52.1) | 36 (50.7) | ||
| 60-75 | 23 (29.5) | 35 (32.4) | 19 (26.8) | 19 (26.8) | ||
| PS score | 0.324 | 0.609 | ||||
| 0 | 45 (57.7) | 70 (64.8) | 43 (60.6) | 40 (56.3) | ||
| 1 | 33 (42.3) | 38 (35.2) | 28 (39.4) | 31 (43.7) | ||
| cT stage | 0.483 | 0.790 | ||||
| T3 | 15 (19.2) | 29 (26.9) | 15 (21.1) | 14 (19.7) | ||
| T4a | 51 (65.4) | 64 (59.3) | 46 (64.8) | 44 (62.0) | ||
| T4b | 12 (15.4) | 15 (13.9) | 10 (14.1) | 13 (18.3) | ||
| cN stage | 0.768 | 0.870 | ||||
| N0 | 12 (15.4) | 20 (18.5) | 11 (15.5) | 8 (11.3) | ||
| N1 | 26 (33.3) | 36 (33.3) | 25 (35.2) | 26 (36.6) | ||
| N2 | 31 (39.7) | 36 (33.3) | 27 (38.0) | 27 (38.0) | ||
| N3 | 9 (11.5) | 16 (14.8) | 8 (11.3) | 10 (14.1) | ||
| P stage | 0.012 | 0.752 | ||||
| P0CY1 | 6 (7.7) | 23 (21.3) | 6 (8.5) | 3 (4.2) | ||
| P1 | 28 (35.9) | 44 (40.7) | 27 (38.0) | 29 (40.8) | ||
| P2 | 31 (39.7) | 34 (31.5) | 30 (42.3) | 32 (45.1) | ||
| P3 | 13 (16.7) | 7 (6.5) | 8 (11.3) | 7 (9.9) | ||
| Measurable lesion | 0.137 | 0.731 | ||||
| No | 29 (37.2) | 52 (48.1) | 29 (40.8) | 27 (38.0) | ||
| Yes | 49 (62.8) | 56 (51.9) | 42 (59.2) | 44 (62.0) | ||
| Ascites volume | 0.010 | 0.581 | ||||
| None | 7 (9.0) | 23 (21.3) | 7 (9.9) | 6 (8.5) | ||
| + | 29 (37.2) | 49 (45.4) | 28 (39.4) | 32 (45.1) | ||
| ++ | 34 (43.6) | 33 (30.6) | 29 (40.8) | 30 (42.3) | ||
| +++ | 8 (10.3) | 3 (2.8) | 7 (9.9) | 3 (4.2) | ||
Abbreviations: PSM, propensity score matching; NIPS, neoadjuvant intraperitoneal and systemic chemotherapy; NSC, neoadjuvant systemic chemotherapy; PS, performance status; P stage, peritoneal stage; +, <500 ml; ++, 500∼2000 ml; +++, >2000 ml.