Clinico-pathological and demographic characteristics of the patient population
| BSO (n=2741) | OP (n=200) | P value | |
| Age (median) | 41 years | 37 years | <0.001 |
| Race | 0.75 | ||
| White | 2209 (80.6%) | 157 (78.5%) | |
| Black | 274 (10%) | 23 (11.5%) | |
| Other/unknown | 258 (9.4%) | 20 (10%) | |
| Comorbidities | |||
| No | 2110 (77%) | 164 (82%) | 0.10 |
| Yes | 631 (23%) | 36 (18%) | |
| Insurance | 0.61 | ||
| Private | 1987 (72.5%) | 139 (69.5%) | |
| Government | 489 (17.8%) | 41 (20.5%) | |
| Uninsured/unknown | 265 (9.7%) | 20 (10%) | |
| LND | <0.001 | ||
| Yes | 2079 (76.2%) | 103 (52%) | |
| No | 648 (23.8%) | 95 (48%) | |
| Tumor size | 0.079 | ||
| <2 cm | 382 (13.9%) | 26 (13%) | |
| 2–4 cm | 580 (21.2%) | 43 (21.5%) | |
| >4 cm | 967 (35.3%) | 56 (28%) | |
| Unknown | 812 (29.6%) | 75 (37.5%) | |
| Grade | 0.38 | ||
| Grade 2 | 2299 (83.9%) | 163 (81.5%) | |
| Grade 3 | 442 (16.1%) | 37 (18.5%) | |
| Stage | 0.73 | ||
| IA | 2340 (85.4%) | 173 (86.5%) | |
| IB | 319 (11.6%) | 20 (10%) | |
| INOS | 82 (3%) | n<10 | |
| Radiation therapy | 0.97 | ||
| Yes | 463 (16.9%) | 34 (17%) | |
| No | 2278 (83.1%) | 166 (83%) |
BSO, bilateral salpingo-oophorectomy; INOS, stage I not otherwise specified; LND, lymphadenectomy; OP, ovarian preservation.