Table 1.
Comparison of clinical characteristics between patients with or without neoadjuvant radiotherapy in the original dataset and in the propensity score matched dataset.
| Clinical Characters | Before Propensity Score Matching | After Propensity Score Matching | ||||
|---|---|---|---|---|---|---|
| Sn (%) | Sn + PRT (%) | SD | Sn (%) | Sn + PRT (%) | SD | |
| RACE | ||||||
| Withe | 5304 (80.07) | 4997 (80.90) | −0.0208 | 3996 (80.18) | 3997 (80.20) | −0.0005 |
| Black | 596 (9.00) | 504 (8.16) | 0.0299 | 461 (9.25) | 427 (8.57) | 0.0239 |
| Unknown | 724 (10.93) | 676 (10.94) | −0.0004 | 527 (10.57) | 560 (11.24) | −0.0212 |
| GENDER | ||||||
| Male | 3576 (53.99) | 3868 (62.62) | −0.1758 | 2961 (59.41) | 3026 (60.71) | −0.0266 |
| Female | 3048 (46.01) | 2309 (37.38) | 2023 (40.59) | 1958 (39.29) | ||
| AGE | ||||||
| < = 50 | 956 (14.43) | 1555 (25.17) | −0.2720 | 956 (19.18) | 1027 (20.61) | −0.0357 |
| >50 | 5668 (85.57) | 4622 (74.83) | 4028 (80.82) | 3957 (79.39) | ||
| TUMOR NUMBER | ||||||
| Single | 6046 (91.27) | 5757 (93.20) | −0.0720 | 4588 (92.05) | 4608 (92.46) | −0.0150 |
| Multiple | 578 (8.73) | 420 (6.80) | 396 (7.95) | 376 (7.54) | ||
| TUMOR SIZE | ||||||
| < = 5 cm | 4250 (64.16) | 4518 (73.14) | −0.1945 | 3467 (69.56) | 3465 (69.52) | 0.0009 |
| >5 cm | 2374 (35.84) | 1659 (26.86) | 1517 (30.44) | 1519 (30.48) | ||
| TNM STAGE | ||||||
| II | 2903 (43.83) | 2647 (42.85) | 0.0196 | 2133 (42.80) | 2131 (42.76) | 0.0008 |
| III | 3721 (56.17) | 3530 (57.15) | 2851 (57.20) | 2853 (57.24) | ||
| HISTOLOGICAL TYPE | ||||||
| Non-mucinous | 6234 (94.11) | 5686 (92.05) | 0.0813 | 4658 (93.46) | 4585 (91.99) | 0.0564 |
| Mucinous | 353 (5.33) | 449 (7.27) | −0.0799 | 291 (5.84) | 373 (7.48) | −0.0660 |
| SRCC | 37 (0.56) | 42 (0.68) | −0.0155 | 35 (0.70) | 26 (0.52) | 0.0232 |
| GRADE | ||||||
| Well | 358 (5.40) | 378 (6.12) | −0.0307 | 291 (5.84) | 340 (6.82) | −0.0404 |
| Moderately | 5166 (77.99) | 4878 (78.97) | −0.0239 | 3917 (78.59) | 3881 (77.87) | 0.0175 |
| Poorly | 992 (14.98) | 827 (13.39) | 0.0455 | 703 (14.11) | 686 (13.76) | 0.0098 |
| undifferentiated | 108 (1.63) | 94 (1.52) | 0.0087 | 73 (1.46) | 77 (1.54) | −0.0066 |
| LYMPH NODE | ||||||
| negative | 91 (1.37) | 310 (5.02) | −0.2083 | 91 (1.83) | 168 (3.37) | −0.0972 |
| < = 12 | 1224 (18.48) | 2127 (34.43) | −0.3678 | 1181 (23.70) | 1360 (27.29) | −0.0825 |
| >12 | 5309 (80.15) | 3740 (60.55) | 0.4394 | 3712 (74.48) | 3456 (69.34) | 0.1145 |
Sn: surgery only; Sn + PRT: pre-radiation treatment + surgery; SD: standardized difference; SRCC: sing-ring cell carcinoma.