Table 1.
Cohort selection
| Selection Criteria | Remaining | Excluding |
|---|---|---|
| Ovarian cancer | 70352 | |
| 1st cancer-ovarian cancer (siterwho1 = ‘27040’) | 62742 | 7610 |
| Year of diagnosis 2000-2013 | 46377 | 16365 |
| Birth dates are same in SEER and Medicare | 45754 | 623 |
| Age 66 and older | 30021 | 15733 |
| AJCC Stage II-IV and Stage Unknown | 26718 | 3303 |
| Patients with pathologic confirmation | 22807 | 3911 |
| Selected patients whose ICD-O-3 histology codes were consistent with the adenocarcinomas of the ovary but excluding borderline tumors, stromal and germ cell tumors | 19432 | 3375 |
| Excluded patients diagnosed at autopsy or by death certificate only | 19420 | 12 |
| Full A and B coverage and No HMO enrollment 12 months before diagnosis to the death or end of the study(12/2014) | 12457 | 6963 |
| Receipt of surgery and chemotherapy | 6767 | 5690 |
| Receipt of taxane or platinum chemotherapy | 6502 | 265 |
| Excluded the patients who received intraperitoneal chemotherapy | 6234 | 268 |
| Stage III or IV | 5417 | 817 |