Fig. 3From: Mismatch of populations between randomised controlled trials of perioperative interventions in major abdominal surgery and current clinical practiceA Changing distribution of ASA scores of participants in RCTs over time, with real-world reference cohort top. B Change in percentage of ASA 1 and ASA 3 + participants recruited over time. Trendlines are 2-period moving average. Solid grey, % of participants ASA 3 + recruited to perioperative RCTs. Dotted grey, % of ASA 3 + patients in UCLH reference cohort. Solid blue, % of participants ASA 1 recruited to perioperative RCTs. Dotted blue, % of ASA 1 patients in UCLH reference cohortBack to article page