Table 3.
Characteristics of patients for unweighted sample and Inverse Probability of Treatment-Weighted (IPTW-ATE) sample.
| Variables | Unweighted Population, No. (%) | Standardized Difference | Weighted Population, % | Standardized Difference | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| PGSGA ≤ 3 | PGSGA > 3 | PGSGA ≤ 3 | PGSGA > 3 | |||||||
| Total | 170 | 170 | ||||||||
| Age (years) | −0.099 | 0.002 | ||||||||
| <60 | 116 | (68.2) | 108 | (63.5) | 66.3 | 66.3 | ||||
| ≥60 | 54 | (31.8) | 62 | (36.5) | 337 | 33.7 | ||||
| Median (Range) | 55.6 | (33.8–82.8) | 57.3 | (33.7–82.6) | 0.174 | 56.0 | (33.8–82.8) | 56.8 | (33.7–82.6) | 0.080 |
| Differentiation | −0.130 | −0.001 | ||||||||
| WD-MD | 97 | (57.1) | 86 | (50.6) | 53.3 | 53.2 | ||||
| PD | 73 | (42.9) | 84 | (49.4) | 467 | 46.8 | ||||
| Clinical stage | −0.225 | 0.001 | ||||||||
| I–II | 47 | (27.6) | 31 | (18.2) | 22.8 | 22.9 | ||||
| III–IV | 123 | (72.4) | 139 | (81.8) | 77.2 | 77.1 | ||||
| LN involvement | −0.237 | −0.101 | ||||||||
| N0-N1 | 91 | (53.5) | 71 | (41.8) | 50.3 | 45.3 | ||||
| N2–N3 | 79 | (46.5) | 99 | (58.2) | 49.7 | 54.7 | ||||
| BMI | 0.422 | 0.424 | ||||||||
| <18 | 11 | (6.5) | 35 | (20.6) | 6.4 | 20.5 | ||||
| ≥18 | 159 | (93.5) | 135 | (79.4) | 93.6 | 79.5 | ||||
| Tx policy | 0.159 | −0.008 | ||||||||
| Definite CCRT | 137 | (80.6) | 147 | (86.5) | 83.3 | 83.0 | ||||
| Surgery ± Tx | 33 | (19.4) | 23 | (13.5) | 16.7 | 17.0 | ||||
| Response to Neoadjuvant Tx | −0.372 | −0.372 | ||||||||
| Response | 151 | (88.8) | 127 | (74.7) | 88.6 | 74.5 | ||||
| No response | 19 | (11.2) | 43 | (25.3) | 11.4 | 25.5 | ||||