Construction of a Prediction Model for MACCE in Elderly Patients After Elective Non-cardiac Surgery

The Revised Cardiac Risk Index (RCRI) attempts to estimate the likelihood of cardiac complications during hospitalization in patients undergoing noncardiac surgery.The Frailty Index is a commonly used tool in clinical practice to assess the degree of frailty in patients.The Quality of Recovery-15 scale (QoR-15) is an easy-to-use score for assessing the quality of post-operative recovery.