“…In the second analysis, we excluded adjusted analyses from studies with a potential risk of bias due to poor adherence to best practice methodological guidelines for prediction model development. 35 , 36 , 37 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 We considered the use of metaregression to further explore subgroups of interest, but did not have a sample size of ten or more studies per adjusted variable, as recommended by Cochrane guidance. 47 For the unadjusted analyses, we decided not to use study-level metaregression because it was unlikely to further benefit the analysis.…”