Phase-specific and lifetime economic burden of cervical cancer and endometrial cancer in a commercially insured United States population

Aim To estimate the incremental phase-specific and lifetime economic burden among newly diagnosed cervical and endometrial cancer patients vs. non-cancer controls. Methods Cervical and endometrial cancer patients newly diagnosed between January 2015 and June 2018 were identified in the Optum Clinformatics DataMart database. The index date was the date of the first diagnosis for cancer cases and the first claim date after 12 months of continuous enrollment for non-cancer controls. Patients were followed until death/loss of enrollment/end of data availability. Per patient per month (PPPM) costs attributable to cancer were calculated for four phases: pre-diagnosis (3 months before diagnosis), initial (6 months post-diagnosis), terminal (6 months pre-death), and continuation (remaining time between initial and terminal phases). Survival data were obtained to determine the monthly proportion of patients in each phase. Total survival adjusted monthly costs were obtained by multiplying the proportion of patients in each phase by the total cost incurred during that month. Phase-specific and lifetime incremental costs of cervical and endometrial cancer were obtained using generalized linear models. Results The analytic cohort included 1,002 cervical cancer patients and 4,005 matched non-cancer controls and 5,003 endometrial cancer patients matched with 19,999 non-cancer controls. Mean adjusted incremental PPPM lifetime costs (95% CI) for cervical cancer and endometrial cancer cases were $5,910 ($5,373-$6,446) and $3,475 ($3,259-$3,691), respectively. Incremental total PPPM phase-specific costs attributable to cervical and endometrial cancer were pre-diagnosis (cervical: $1,057; endometrial: $3,315), initial ($12,084; $8,618), continuation ($2,732; $1,147), and terminal ($2,702; $5,442). Incremental costs were significantly higher for cancer patients vs. non-cancer controls across patient lifetime and all phases of care (except terminal phase costs for cervical cancer). Outpatient costs were the major driver of costs across all post-diagnosis phases. Conclusion This study highlights the cost burden associated with cervical/endometrial cancer and cost variation by phases of care.