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1.
BMC Health Serv Res ; 22(1): 70, 2022 Jan 14.
Article in English | MEDLINE | ID: mdl-35031047

ABSTRACT

BACKGROUND: Studies of the hospital volume-outcome relationship have highlighted that a greater volume activity improves patient outcomes. While this finding has been known for years, most studies to date have failed to delve into what underlies this relationship. OBJECTIVE: This study aimed to shed light on the basis of the hospital volume effect on patient outcomes by comparing treatment modalities for epithelial ovarian carcinoma patients. DATA: An exhaustive dataset of 355 patients in first-line treatment for Epithelial Ovarian Carcinoma (EOC) in 2012 in three regions of France was used. These regions account for 15% of the metropolitan French population. METHODS: In the presence of endogeneity induced by a reverse causality between hospital volume and patient outcomes, we used an instrumental variable approach. Hospital volume of activity was instrumented by the distance from patients' homes to their hospital, the population density, and the median net income of patient municipalities. RESULTS: Based on our parameter estimates, we found that the rate of complete tumor resection would increase by 15.5 percentage points with centralized care, and by 8.3 percentage points if treatment decisions were coordinated by high-volume centers compared to decentralized care. CONCLUSION: As volume alone is an imperfect correlate of quality, policy-makers need to know what volume is a proxy for in order to devise volume-based policies.


Subject(s)
Hospitals , Ovarian Neoplasms , Carcinoma, Ovarian Epithelial , France/epidemiology , Humans , Income , Ovarian Neoplasms/therapy
2.
BMC Health Serv Res ; 18(1): 3, 2018 01 04.
Article in English | MEDLINE | ID: mdl-29301572

ABSTRACT

BACKGROUND: To investigate the relationship between hospital volume activities and the survival for Epithelial Ovarian Carcinoma (EOC) patients in France. METHODS: This retrospective study using prospectively implemented databases was conducted on an exhaustive cohort of 267 patients undergoing first-line therapy during 2012 in the Rhone-Alpes Region of France. We compared Progression-Free Survival for Epithelial Ovarian Carcinoma patients receiving first-line therapy in high- (i.e. ≥ 12 cases/year) vs. low-volume hospitals. To control for selection bias, multivariate analysis and propensity scores were used. An adjusted Kaplan-Meier estimator and a univariate Cox model weighted by the propensity score were applied. RESULTS: Patients treated in the low-volume hospitals had a probability of relapse (including death) that was almost two times (i.e. 1.94) higher than for patients treated in the high-volume hospitals (p < 0.001). CONCLUSION: To our knowledge, this is the first study conducted in this setting in France. As reported in other countries, there was a significant positive association between greater volume of hospital care for EOC and patient survival. Other factors may also be important such as the quality of the surgical resection.


Subject(s)
Hospitals/statistics & numerical data , Neoplasms, Glandular and Epithelial/therapy , Ovarian Neoplasms/therapy , Aged , Carcinoma, Ovarian Epithelial , Databases, Factual , Disease-Free Survival , Female , France , Humans , Middle Aged , Retrospective Studies , Treatment Outcome
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