TABLE 2.
Patient demographics for the PS-IPTW model (n = 3215)
| RT alone |
CCRT |
||||
|---|---|---|---|---|---|
| Characteristic | n = 1220 | n = 1995 | P value | SD (before) | SD (after) |
| Age, y | .826 | 0.1811 | 0.0374 | ||
| <30 | 69 (5.7%) | 130 (6.5%) | |||
| 30–39 | 355 (29.1%) | 586 (29.4%) | |||
| 40–49 | 368 (30.2%) | 607 (30.4%) | |||
| 50–59 | 234 (19.2%) | 364 (18.3%) | |||
| 60–69 | 130 (10.7%) | 217 (10.9%) | |||
| ≥70 | 64 (5.2%) | 90 (4.5%) | |||
| Year | .729 | 1.1292 | 0.0252 | ||
| 1988–1997 | 226 (18.5%) | 348 (17.4%) | |||
| 1998–2007 | 549 (45.0%) | 905 (45.4%) | |||
| 2008–2016 | 445 (36.5%) | 742 (37.2%) | |||
| Race/ethnicity | .942 | 0.0270 | 0.0245 | ||
| White | 702 (57.5%) | 1130 (56.6%) | |||
| Black | 104 (8.5%) | 165 (8.3%) | |||
| Hispanic | 288 (23.6%) | 488 (24.4%) | |||
| Asian | 107 (8.8%) | 175 (8.8%) | |||
| Others | 19 (1.6%) | 38 (1.9%) | |||
| Registry area | .886 | 0.0115 | 0.0012 | ||
| West | 782 (64.0%) | 1285 (64.4%) | |||
| Central | 184 (15.1%) | 288 (14.4%) | |||
| East | 255 (20.9%) | 422 (21.2%) | |||
| Marital status | .970 | 0.0940 | 0.0190 | ||
| Married | 627 (51.4%) | 1041 (52.2%) | |||
| Single | 295 (24.2%) | 480 (24.1%) | |||
| Others | 264 (21.6%) | 421 (21.1%0 | |||
| Unknown | 34 (2.8%) | 52 (2.6%) | |||
| Histology | .934 | 0.1253 | 0.0049 | ||
| Squamous | 809 (66.3%) | 1324 (66.4%) | |||
| Adenocarcinoma | 297 (24.3%) | 477 (23.9%) | |||
| Adenosquamous | 114 (9.3%) | 194 (9.7%) | |||
| Tumor differentiation | .751 | 0.1164 | 0.0326 | ||
| Well | 60 (4.9%) | 94 (4.7%0 | |||
| Moderate | 495 (40.6%) | 775 (38.8%) | |||
| Poor | 582 (47.7%) | 988 (49.5%) | |||
| Unknown | 83 (6.8%) | 138 (6.9%) | |||
| T stage | .979 | 0.0358 | 0.0253 | ||
| 1a | 39 (3.2%) | 68 (3.4%) | |||
| 1b | 747 (61.2%) | 1193 (59.8%) | |||
| 1NOS | 76 (6.2%) | 123 (6.2%) | |||
| 2a | 125 (10.2%) | 215 (10.8%) | |||
| 2b | 233 (19.1%) | 396 (19.8%) | |||
| 2NOS | 0 | 1 | |||
| Tumor size, cm | .857 | 0.2341 | 0.0284 | ||
| <2.0 | 157 (12.9%) | 238 (11.9%) | |||
| 2.0–3.9 | 446 (36.6%) | 717 (35.9%) | |||
| 4.0–5.9 | 307 (25.2%) | 513 (25.7%) | |||
| ≥6.0 | 106 (8.7%) | 192 (9.6%) | |||
| Unknown | 204 (16.7%) | 335 (16.8%) | |||
| Lymph node ratio | .433 | 0.0907 | 0.0246 | ||
| ≤7.6% | 453 (37.1%) | 749 (37.5%) | |||
| >7.6% | 705 (57.8%) | 1165 (58.4%) | |||
| Unknown | 62 (5.1%) | 82 (4.1%) | |||
| Hysterectomy type | .829 | 0.0760 | 0.0229 | ||
| Simplea | 312 (25.6%) | 493 (24.7%) | |||
| Radical | 828 (67.9%) | 1364 (68.4%) | |||
| NOS | 80 (6.6%) | 138 (6.9%) | |||
| Lymphadenectomy | .294 | 0.0825 | 0.0557 | ||
| Not adequate | 1028 (84.3%) | 1718 (86.1%) | |||
| Adequate | 131 (10.7%) | 195 (9.8%) | |||
| Unknown count | 61 (5.0%) | 82 (4.1%) |
SD ≤0.10 indicates a good-balance between the groups. A binary logistic regression test was used for the P value in the PS-IPTW model.
CCRT, concurrent chemo-radiotherapy; NOS, not otherwise specified; PS-IPTW, propensity score inverse probability of treatment weighting; RT, radiotherapy; SD, standardized difference.
a
Including pan-hysterectomy.