OCSCC	Oral Cavity Squamous Cell Carcinoma
cN0	Clinically Node Negative
END	Elective Neck Dissection
ML	Machine Learning
DOI	Depth of Invasion
AUC	Area Under the Curve
HSROC	Hierarchical Summary Receiver Operating Characteristic
QUADAS-2	Quality Assessment of Diagnostic Accuracy Studies–Version 2
NPV	Negative Predictive Value
PPV	Positive Predictive Value
NCCN	National Comprehensive Cancer Network
PRISMA	Preferred Reporting Items for Systematic Reviews and Meta-Analyses
CI	Confidence Interval