Colorectal cancer surgery for obese patients: Financial and clinical outcomes of a Dutch population-based registry

Background and Objectives The objective of this study was to explore the association among adverse events, body mass index (BMI), and hospital costs after colorectal cancer surgery in a country with an intermediate BMI distribution. Methods All colorectal cancer procedures in 29 Dutch hospitals listed in a 2010–2012 population‐based database and with a BMI > 18.5 were included (n = 8687). Hospital costs were measured uniformly and based on time‐driven activity‐based costing. The BMI classification of the World Health Organization was used. Results Patients in obesity classes 1 (23.6% [after risk‐adjustment OR 1.245, CI 1.064–1.479, P = 0.007]) and ≥2 (28.1% [after risk‐adjustment OR 1.816, CI 1.382–2.388, P