9. Prediction models for which the predictive performance was compared to the RCRI.
| Number of studies | |
| NSQIP‐MICA | 10 |
| NSQIP surgical risk score | 9 |
| CHADS2 score | 4 |
| Detsky index | 4 |
| Goldman index | 4 |
| CHADS2VASc | 3 |
| R2CHADS2 score | 3 |
| Vascular Study Group of New England Cardiac Risk Index | 3 |
| AUB‐HAS2 Cardiovascular Risk Index | 2 |
| Charlson Index | 2 |
| Glasgow Aneurysm Risk score | 2 |
| Halm score | 2 |
| Individual items of the RCRI | 2 |
| POSSUM | 2 |
| P‐POSSUM | 2 |
| RCRI without insulin use with low eGFR | 2 |
| Reiss Index | 2 |
| South African Vascular Surgical Cardiac Risk Index | 2 |
| Surgical Mortality Probability Model | 2 |
| Thoracic RCRI | 2 |
| Tu score | 2 |
| V‐POSSUM | 2 |
| Adult Comorbidity Evaluation‐27 score | 1 |
| Adult Comorbidity Evaluation‐27 score + high age | 1 |
| Age + type of admission + RCRI + arrhythmia + electrolyte disorder + hypertension | 1 |
| Age + type of admission + RCRI + arrhythmia + electrolyte disorder + hypertension + polygenic risk score for coronary artery disease | 1 |
| ANESCARDIOCAT | 1 |
| ASA + NSQIP surgical risk score | 1 |
| ASA + Surgical Outcome Risk Tool | 1 |
| Ashton | 1 |
| Biochemistry and Haematology Outcome Model | 1 |
| Coronary artery disease + atrium fibrillation + diabetes mellitus + mechanical ventilation + heart rate | 1 |
| CR‐POSSUM | 1 |
| Detsky score + type of surgery | 1 |
| Dilated cardiomyopathy + ischaemic cardiopathy + CVA | 1 |
| Eagle score | 1 |
| Geriatric Sensitive Perioperative Cardiac Risk Index | 1 |
| Insulin use + open surgery + high fibrinogen + CRP + NT‐proBNP | 1 |
| Long Term Survival Score | 1 |
| MASHOUR | 1 |
| Modified Frailty Index | 1 |
| Myocardial infarction + sex + insulin‐dependent diabetes mellitus + low BMI + high age + atrium fibrillation | 1 |
| New model 1 | 1 |
| New model 2 | 1 |
| New model 3 | 1 |
| NSQIP score "Death" | 1 |
| NT‐proBNP + high creatinine + ischaemic heart disease + congestive heart failure | 1 |
| Patient Outcomes in Renal Transplant model | 1 |
| Preoperative risk score of the estimation of physiological ability + surgical stress score | 1 |
| RCRI with redefined high‐risk surgery | 1 |
| RCRI with redefined high‐risk surgery and clinical characteristics | 1 |
| RCRI without insulin use and creatinine > 2.0 mg/dL | 1 |
| Recalibrated NSQIP surgical risk score | 1 |
| Recalibrated RCRI | 1 |
| Regulatory T cells + age + sex + ASA + previous PCI + creatinine | 1 |
| Surgical Outcome Risk Tool | 1 |
| Surgical risk score | 1 |
| TJA individual factors | 1 |
| TJA risk score | 1 |
| Updated Cardiac Risk Score | 1 |
| Vascular Biochemistry and Haematology Outcome Model | 1 |
| Vascular Quality Initiative Cardiac Risk Index | 1 |
| Vascular Study Group of New England Cardiac Risk Index + anaemia | 1 |
| V‐POSSUM + troponin | 1 |
| V‐POSSUM + troponin + NT‐proBNP | 1 |
ACE‐27: adult comorbidity evaluation‐27; ACS‐NSQIP: American College of Surgeons National Surgical Quality Improvement Program; CHADS2 score: congestive heart failure, hypertension, age ≥ 75 years, diabetes mellitus, stroke (double weight); CHADS2VASc: CHADS2 added with vascular disease, age 65 to 74 years and sex; CR‐POSSUM: POSSUM score for colorectal surgical patients; MICA: myocardial infarction and cardiac arrest; New model 1: age, sex, history of coronary revascularisation, aortic or mitral valve disease, arrhythmia, hypertension, carotid artery stenosis, hypovolaemia, chronic renal failure, emergency surgery, neurosurgery, thoracic surgery, major vascular surgery, haematopoietic/lymphatic surgery, gastro‐intestinal surgery; New model 2: age, ASA, neurosurgery, thoracic surgery, major vascular surgery, haematopoietic/lymphatic surgery, gastro‐intestinal surgery; New model 3: history of myocardial infarction, age > 70, insulin dependent diabetes mellitus, female, BMI < 18, operation time > 2.5 hours, atrium fibrillation, intraoperative hypotension; P‐POSSUM: Portsmouth‐POSSUM; POSSUM: Physiologic and Operative Severity Score for the enUmeration of Mortality and Morbidity; R2CHADS2: CHADS2 score added with renal failure (double weighted); SORT: Surgical Outcome Risk Tool; TJA: total joint arthroplasty; V‐POSSUM: POSSUM for vascular surgical patients