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Practice variation on hospital level in the systemic treatment of metastatic colorectal cancer in The Netherlands: a population-based study.

著者 Keikes L , Koopman M , Stuiver MM , Lemmens VEPP , van Oijen MGH , Punt CJA
Acta Oncol.2020 Feb 12 ; ():1-9.
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Population-based data on the implementation of guidelines for cancer patients in daily practice are scarce, while practice variation may influence patient outcomes. Therefore, we evaluated treatment patterns and associated variables in the systemic treatment of metastatic colorectal cancer (mCRC) in the Netherlands. We selected a random sample of adult mCRC patients diagnosed from 2008 to 2015 from the National Cancer Registry in 20 (4 academic, 8 teaching and 8 regional) Dutch hospitals. We examined the influence of patient, demographic and tumour characteristics on the odds of being treated with systemic therapy according to the current guideline and assessed its association with survival. Our study population consisted of 2222 mCRC patients of whom 1307 patients received systemic therapy for mCRC. Practice variation was most obvious in the use of bevacizumab and anti-EGFR therapy in patients with wild-type tumours. Administration rates did not differ between hospital types but fluctuated between individual hospitals for bevacizumab (8-92%;  < .0001) and anti-EGFR therapy (10-75%;  = .05). Bevacizumab administration was inversely correlated to higher age (OR:0.2; 95%CI: 0.1-0.3) comorbidity (OR:0.6; 95%CI: 0.5-0.8) and the presence of metachronous metastases (OR:0.5; 95%CI: 0.3-0.7), but patient characteristics did not differ between hospitals with low or high bevacizumab administration rates. The hazard ratios for exposure to bevacizumab and anti-EGFR therapy were 0.8 (95%CI: 0.7-0.9) and 0.6 (95%CI: 0.5-0.8), respectively. We identified significant inter-hospital variation in targeted therapy administration for mCRC patients, which may affect outcome. Age and comorbidity were inversely correlated with non-administration of bevacizumab but did not explain inter-hospital practice variation. Our data suggest that practice variation is based on individual strategy of hospitals rather than guideline recommendations or patient-driven decisions. Individual hospital strategies are an additional factor that may explain the observed differences between real-life data and results obtained from clinical trials.
PMID: 32048563 [PubMed - as supplied by publisher]
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