Appendix 4

- MeNTS scoring system and characteristics of related studies.

Authors	Score characteristics/modifications or comparisons of scales	Surgery type	Operation, disease, and patient factor characteristics and modifications	Main findings
Prachand et al⁵	Original described scoring system	Non-specified	Original operation, disease, and patient factors	It was proposed high scores were associated with poorer perioperative patient outcome, increased risk of COVID-19 transmission to the healthcare team, or increased hospital resource use.
Slidell et al²⁴	Modified scoring system on pediatric patients (pMeNTS)	Paediatric surgery	Modified operation and patient factors Same disease factors	Adaptation of the adult MeNTS system into a pediatric-specific scoring system better reflected the needs of the pediatric patient population.
Dinçer et al¹¹	Original described scoring system	General, orthopedic, gynecologic-obstetric, neurosurgery, ear-nose-throat surgery, plastic, cardiovascular, urology, and ophthalmology	Original operation, disease, and patient factors	MeNTS scores were calculated prospectively and postoperative complications were analyzed. High scores were related with postoperative complications/poorer patient outcome.
Cohn et al²⁸	Comparison of questionnaire based (MeNTS), expert opinion based, and individual surgeon based approaches on patient triage	Urologic surgery	Original operation, disease, and patient factors	MeNTS did not meaningfully reflect the triage decision of urologic surgeries. MeNTS, consensus/expert opinion, and individual surgeon based surgical prioritizations disagreed.
Waxman et al⁷	Modified scoring system on CVS interventions (CV-MeNTS)	Cardiovascular procedures in the Catheterization Laboratory	Modified operation, disease, and patient factors	CV-MeNTS could be a useful tool for the prioritization of CV procedures in a period with limited capacity.
Marfori et al⁶	Assessment of interrater reliability and validity of modified elective surgery acuity scale (mESAS) and modified MeNTS scores (Gyn-MeNTS)	Benign gynecologic surgeries	Modified operation, disease, and patient factors	Gyn-MeNTS scoring system did not strongly discriminate the most urgent cases as determined by mESAS.
Saleeby et al¹⁰	Modified scoring system on gynecologic surgeries	General gynecologic, gynecologic oncologic, and female pelvic reconstructive surgery	Modified operation, disease, and patient factors	The modified-MeNTS could be purposed as a quantitative method for decision-making rather than subjective assessments.
Sharma et al⁸	Modified scoring system on otolaryngology surgeries (MeNTS-M)	Otolaryngology-Head and Neck Surgery (adults and pediatrics)	Mucosal score was incorporated into the original MeNTS	The mucosal score integrated MeNTS-M was interpreted as a valuable tool on triaging otolaryngology-head and neck surgeries.
Teja et al²⁵	Modified scoring system on ophthalmic surgery	Ophthalmic surgery	Modified operation, disease, and patient factors	Modified MeNTS could provide guidance to ophthalmologists to facilitate decision making in triaging elective procedures.
Coello et al²⁶	Comparison of modified MeNTS and subjective priority scale on operated, and deferred cases	Urologic surgery	Modified operation, disease, and patient factors	Modified MeNTS scores did not show statistically significant difference between operated and non-operated patients. The score was not considered as a useful tool.
Fernandez et al²⁷	Modified scoring system on pediatric urology	Pediatric urologic surgery	Modified operation and patient factors Same disease factors	Pediatric urology specific modified scoring system was proposed and allowed to prioritize surgeries with cut-off values of 12 and 16.
Prabhakar et al⁹	Modified scoring system on orthopedic surgery (MeNTS-OS)	Orthopedic surgery	Modified operation, disease, and patient factors (consists of surgical and disease factors)	MeNTS-OS scoring system was proposed as a useful tool to triage orthopedic surgeries. Higher scores were correlate with postponed cases.