Table 1.
Baseline characteristics of patients.
| characteristics | BEFORE PSM a | AFTER PSM a | ||||
|---|---|---|---|---|---|---|
| No TRA (N=63)(%) | TRA (N=89)(%) | P | No TRA (N=57)(%) | TRA (N=57)(%) | P | |
| Age (years) | ||||||
| <65 | 36 (57.1) | 56 (62.9) | 0.473 | 35 (61.4) | 35 (61.4) | 1 |
| ≥65 | 27 (42.9) | 33 (37.1) | 22 (38.6) | 22 (38.6) | ||
| Gender | ||||||
| Male | 44 (69.8) | 76 (85.4) | 0.021 | 44 (77.1) | 44 (77.1) | 1 |
| Famale | 19 (30.2) | 13 (14.7) | 13 (22.9) | 13 (22.9) | ||
| Smoking | ||||||
| No | 33 (52.4) | 62 (69.7) | 0.03 | 29 (50.9) | 38 (66.7) | 0.087 |
| Yes | 30 (47.6) | 27 (30.3) | 28 (49.1) | 19 (33.3) | ||
| Pathological pattern | ||||||
| squamous carcinoma | 35 (55.6) | 71 (79.8) | 0.005 | 34 (59.6) | 43 (75.4) | 0.184 |
| adenocarcinoma | 18 (28.6) | 13 (14.7) | 15 (26.3) | 10 (17.5) | ||
| else | 10 (15.9) | 5 (5.6) | 8 (14.1) | 4 (7.1) | ||
| Weight loss | ||||||
| <5% | 39 (61.9) | 67 (75.3) | 0.077 | 37 (64.9) | 46 (80.7) | 0.058 |
| ≥5% | 24 (38.1) | 22 (24.7) | 20 (35.1) | 11 (19.3) | ||
| KPS | ||||||
| >80 | 58 (92.1) | 84 (94.4) | 0.57 | 53 (93) | 53 (93) | 1 b |
| ≤80 | 5 (7.9) | 5 (5.6) | 4 (7) | 4 (7) | ||
| T classification | ||||||
| T1-2 | 19 (30.2) | 18 (20.2) | 0.16 | 17 (29.8) | 14 (24.6) | 0.528 |
| T3-4 | 44 (69.8) | 71 (79.8) | 40 (70.2) | 43 (75.4) | ||
| N classification | ||||||
| N0-1 | 13 (20.6) | 23 (25.8) | 0.457 | 12 (21.1) | 15 (26.3) | 0.509 |
| N2-3 | 50 (79.4) | 66 (74.2) | 45 (78.9) | 42 (73.7) | ||
| Stages | ||||||
| IIb | 6 (9.5) | 9 (10.1) | 0.159 | 5 (8.8) | 6 (10.5) | 0.233 |
| IIIa | 14 (22.2) | 15 (23.8) | 13 (22.8) | 10 (17.5) | ||
| IIIb | 23 (36.5) | 35 (55.6) | 21 (36.8) | 19 (33.3) | ||
| IIIc | 13 (20.6) | 9 (14.3) | 11 (19.3) | 6 (10.5) | ||
| IV | 7 (11.1) | 21 (23.6) | 7 (12.3) | 16 (28.1) | ||
| Chemotherapy | ||||||
| No | 28 (44.4) | 28 (31.5) | 0.102 | 26 (45.6) | 18 (31.6) | 0.124 |
| Yes | 35 (55.6) | 61 (68.5) | 31 (54.4) | 39 (38.4) | ||
a
aThe PSM was performed using age, sex, which were subdivided according to the median values.
b
.Fourfold table: sample size ≥ 40, 1 ≤ at least 2 theoretical frequencies < 5, using Fisher’s exact test;
n, number of cases/controls; PSM, propensity score matching.