Reply to Letter to the Editor: New Equations for Predicting Postoperative Risk in Patients with Hip Fracture

Risk scoring models for predicting peri-operative morbidity and mortality in people with fragility hip fractures: Qualitative systematic review

“…Two studies [14,18] reported whether the model was of 'good fit' or 'poor fit' without further statistical presentation. Calibration values for one study [22] were not presented in the original paper, but were given by the authors in a subsequent letter [49].…”