Hospital variation in cancer treatments and survival outcomes of advanced melanoma patients: Nationwide quality assurance in the netherlands

Jesper van Breeschoten, Alfonsus J.M. van den Eertwegh, Liesbeth C. de Wreede, Doranne L. Hilarius, Erik W. van Zwet, John B. Haanen, Christian U. Blank, Maureen J.B. Aarts, Franchette W.P.J. van den Berkmortel, Jan Willem B. de Groot, Geke A.P. Hospers, Ellen Kapiteijn, Djura Piersma, Rozemarijn S. van Rijn, Marion A.M. Stevense‐Den Boer, Astrid A.M. van der Veldt, Gerard Vreugdenhil, Marye J. Boers‐sonderen, Karijn P.M. Suijkerbuijk, Michel W.J.M. Wouters*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

Background: To assure a high quality of care for patients treated in Dutch melanoma centers, hospital variation in treatment patterns and outcomes is evaluated in the Dutch Melanoma Treatment Registry. The aim of this study was to assess center variation in treatments and 2‐year survival probabilities of patients diagnosed between 2013 and 2017 in the Netherlands. Methods: We selected patients diagnosed between 2013 and 2017 with unresectable IIIC or stage IV melanoma, registered in the Dutch Melanoma Treatment Registry. Centers’ performance on 2‐year survival was evaluated using Empirical Bayes estimates calculated in a random effects model. Treatment patterns of the centers with the lowest and highest estimates for 2‐year survival were compared. Results: For patients diagnosed between 2014 and 2015, significant center variation in 2‐ year survival probabilities was observed even after correcting for case‐mix and treatment with new systemic therapies. The different use of new systemic therapies partially explained the observed variation. From 2016 onwards, no significant difference in 2‐year survival was observed between centers. Conclusion: Our data suggest that between 2014 and 2015, after correcting for patient case-mix, significant variation in 2‐year survival probabilities between Dutch melanoma centers existed. The use of new systemic therapies could partially explain this variation. In 2013 and between 2016 and 2017, no significant variation between centers existed.

Original languageEnglish
Article number5077
JournalCancers
Volume13
Issue number20
DOIs
Publication statusPublished - 11 Oct 2021

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