Strengths and limitations
A possible risk of selection bias exists inherent to the design of the I CARE study.Measuring the quality aspects of care was challenging. The CQI is ordinarily distributed among a larger population and had to be adapted to fit the purpose of this intervention. Nevertheless, internal consistency of CQI domains was good to excellent, and single items provided further insights. Even though there were some missing data, which can lead to non-response bias, there were no important differences between the GP-led and surgeon-led group in any of the quality aspects of care. The findings are in line with previous research,