Patient characteristics
| Covariate | Total (n=12 189) | Patients of medical oncologists (n=7705) | Patients of gynecologic oncologists (n=4484) | P value |
| Age at death, years (%) | <0.001 | |||
| 66–70 | 20.5 | 20.2 | 21.0 | |
| 71–74 | 19.0 | 19.2 | 18.6 | |
| 75–79 | 21.7 | 22.4 | 20.5 | |
| 80–84 | 19.4 | 20.1 | 18.2 | |
| ≥85 | 19.5 | 18.1 | 21.7 | |
| Race (%) | <0.001 | |||
| White | >80 | >80 | >80 | |
| Black | 8.4 | 7.0 | 10.8 | |
| Asian or Pacific Islander | 4.1 | 3.8 | 4.5 | |
| Other or Unknown | <1 | <1 | <1 | |
| Hispanic | 5.9 | 6.1 | 5.6 | 0.22 |
| Married | 43.8 | 45.5 | 41.0 | <0.001 |
| Charlson Comorbidity Index, year prior to death (%) | 0.007 | |||
| 0 | 54.3 | 54.0 | 54.8 | |
| 1 | 24.5 | 24.9 | 24.0 | |
| 2 | 10.0 | 10.4 | 9.2 | |
| ≥3 | 8.3 | 8.2 | 8.5 | |
| Unknown | 2.9 | 2.6 | 3.5 | |
| Cause of death, cancer site (%) | <0.001 | |||
| Ovary | 55.1 | 60.8 | 45.4 | |
| Uterus | 31.4 | 28.5 | 36.4 | |
| Cervix | 6.9 | 6.2 | 8.1 | |
| Vulva | 3.7 | 2.1 | 6.4 | |
| Vagina | 1.3 | 1.0 | 1.7 | |
| Other | 1.7 | 1.5 | 2.0 | |
| Stage at diagnosis (%) | <0.001 | |||
| I | 11.3 | 10.0 | 13.5 | |
| II | 6.8 | 6.3 | 7.4 | |
| III | 36.0 | 35.6 | 36.6 | |
| IV | 32.3 | 34.7 | 28.2 | |
| Unknown | 13.7 | 13.3 | 14.3 | |
| Urban/rural location (%) | <0.001 | |||
| Big metropolitan | >50 | >50 | >50 | |
| Metropolitan | 30.4 | 32.0 | 27.7 | |
| Urban | 5.6 | 6.5 | 4.0 | |
| Less urban | 7.1 | 6.9 | 7.5 | |
| Rural | 2.0 | 2.2 | 2.2 | |
| Unknown | <1 | <1 | <1 | |
| Medicare/Medicaid dual eligible (%) | 16.3 | 15.5 | 17.5 | 0.005 |
| Zip code percent less than high school education (%) | <0.001 | |||
| <5 | 15.7 | 15.1 | 16.6 | |
| 5–9.9 | 29.8 | 30.9 | 28.1 | |
| 10–19.9 | 32.7 | 31.9 | 34.2 | |
| 20–29.9 | 14.2 | 14.0 | 14.5 | |
| ≥30 | 6 | 6.5 | 5.1 | |
| Unknown | 1.6 | 1.6 | 1.4 | |
| Zip code median income (%) | 0.26 | |||
| <$20 000 | <1 | <1 | <1 | |
| $20 000–$44 999 | 25.6 | 24.9 | 26.8 | |
| $45 000–$139 999 | 70.7 | 71.3 | 69.6 | |
| $140 000-$149 999 | 0.7 | 0.7 | 0.6 | |
| ≥$150 000 | 1 | 1 | 0.9 | |
| Unknown | <2 | <2 | <2 | |
| Registry, year of death (%) | <0.001 | |||
| San Francisco | 3.3 | 3.9 | 2.3 | |
| Connecticut | 6.5 | 6.0 | 7.2 | |
| Detroit | 5.5 | 3.7 | 8.7 | |
| Hawaii | 0.8 | 0.5 | 1.4 | |
| Iowa | 6.5 | 5.9 | 7.4 | |
| New Mexico | 2.2 | 1.4 | 3.5 | |
| Seattle | 6.0 | 6.7 | 4.9 | |
| Utah | 2.3 | 2.9 | 1.2 | |
| Atlanta | 2.9 | 2.2 | 4.2 | |
| San Jose | 2.1 | 2.3 | 1.7 | |
| Los Angeles | 7.1 | 7.7 | 6.2 | |
| Rural Georgia | <1 | <1 | <1 | |
| Greater California | 17.3 | 19.8 | 12.8 | |
| Kentucky | 5.8 | 4.2 | 8.7 | |
| Louisiana | 5.4 | 5.2 | 5.7 | |
| New Jersey | 16.9 | 18.7 | 13.8 | |
| Greater Georgia | 7.9 | 7.6 | 8.5 | |
| Unknown | <2 | <2 | <2 | |