“…7,26–28,49 Most cost-effectiveness studies (19, 66%) conducted a within-trial cost-effectiveness analysis using data from a single RCT 86,87,100,102,105,106,112,113 or a non-randomized study, such as before and after 90,96,99,101,103,114 or cohort studies. 88,89,91,95,110 Eleven cost-effectiveness studies (38%) used a model, either based on a single study, 92,104 a review of the literature 93,97,107,108,109,111 or from expert evidence elicitation. 94 …”