“…7 In secondary care, the use of audit and feedback has shown improvements in warfarin management, and in many settings this approach has demonstrated small-to-moderate care improvement effects similar to those found in our study. 14,22 A review of the benefits of improvement collaboratives has also shown positive effects, but they too are often used alongside other interventions and it is often unclear which aspects determine success and why this is the case or otherwise. 8 Similarly, the use of ‘clinical champions’ in organisational patient safety interventions is known to be effective, and this may also have been a facilitating factor in the moderate success of the study.…”