Intensity of end-of-life care for gynecologic cancer patients by primary oncologist specialty.

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12032 Background: The impact of primary oncologist specialty, medical oncology (MO) versus gynecologic oncology (GO), on intensity of care at the end of life (EOL) in elderly patients with gynecologic cancer is unclear. Methods: This retrospective cohort study used Surveillance, Epidemiology and End Results (SEER) Medicare data. Subjects were fee-for-service Medicare enrollees over 65 years old, who had seen a GO or MO in an outpatient setting in the last year of life and died of a gynecologic cancer between 2006 and 2015. The primary oncologist was defined as the provider with the majority of outpatient visits in the last year of life. The primary outcome was intensity of care at the EOL, a composite score defined by receipt of chemotherapy in the last 14 days of life, death in the hospital, enrollment in hospice for less than three days, more than one ED visit, more than one hospital admission, spending more than 14 days in the hospital, or any ICU admission in the last 30 days of life. Simple and multivariable linear regression analyses were conducted to evaluate for differences in EOL care outcomes by primary oncologist specialty. Linear regressions were repeated after creating a more similar control group through nearest-neighbor propensity score matching, with and without replacement. Results: Of 12,189 subjects, 63% were primarily treated by a MO and only 27% by a GO for EOL care. Most died of ovarian cancer (55.1%), followed by uterine (31.4%), cervical (6.9%), and other cancers (6.7%). Compared to GO patients, MO patients were younger, more likely to be white, married, not dual-eligible, higher stage, and to die of ovarian cancer. Overall, 55.4% (95% CI 54.73-56.49) received intense care at the EOL. Although both specialties engaged in high levels of intense EOL care, the adjusted rates for GO (54.03%; 95% CI 52.28-55.77) were significantly less compared to MO (56.53%; 95% CI 55.36-57.69; p=0.023) in unadjusted and adjusted analyses of the entire and propensity-matched cohorts (Table). Conclusions: Approximately 2/3 of women with gynecologic cancer will receive EOL care from a MO, compared to 1/3 from a GO. Both specialists engage in high levels of intense EOL care in over half of their patients, although GO less so. Future work should focus on identifying approaches to reduce high-intensity EOL care, which may include additional training or incorporation of palliative medicine into cancer care.[Table: see text]