Relationship Between Number of Breast Cancer Operations Performed and 5-Year Survival After Treatment for Early-Stage Breast Cancer
Bibliographic Data
Objectives. We examined the association between number of breast cancer operations performed in a hospital (hospital volume) and all-cause and breast cancer–specific mortality using a national database and statistical methods appropriate for clustering and reducing confounding. Methods. In a retrospective cohort study, we linked Surveillance, Epidemiology, and End Results tumor registry data with Medicare claims data. The cohort included 11225 Medicare patients who had undergone surgery for early-stage breast cancer from 1994 to 1996 in 457 different hospitals. Primary outcomes were all-cause and breast cancer–specific survival rates at a mean follow-up time of 62.5 months. Results. In comparison with treatment in a low-volume hospital, treatment in a high-volume hospital was associated with hazard ratios of 0.83 (95% confidence interval [CI]=0.75, 0.92) for all-cause mortality and 0.80 (CI=0.66, 0.97) for breast cancer–specific mortality. Conclusions. An association between the volume of breast cancer operations performed in a hospital and 5-year survival rates was observed for both all-cause and breast cancer–specific mortality. Further work investigating the aspects of hospital volume that contribute to increased survival is warranted
Breast cancer · Cancer · Cancer registry · Cohort · Cohort study · Confidence interval · Confounding · Hazard ratio · Proportional hazards model · Retrospective cohort study · Stage (stratigraphy) · Surveillance, Epidemiology, and End Results · Breast Cancer Treatment Studies · Breast Lesions and Carcinomas · Epidemiology · Global Cancer Incidence and Screening · Internal Medicine · Medicine · Oncology
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| Unique citing works | 5 |
|---|---|
| Citations per year | 0,28 |
| Citation span | 2008 - 2021 (14) |
| Citation velocity | historical |
| Highly cited | No |
| Citation types | Neutral: 5 |