TB	Tumor budding
HNSCC	Head and neck squamous cell carcinoma
ITBCC	International Tumor Budding Consensus Conference
ROC	Receiver operating characteristics
OS	Overall survival
DFS	Disease-free survival
AUC	Area under the curve
CI	Confidence interval
HR	Hazard ratio
OR	Odds ratio
AJCC	American Joint Committee on Cancer
ENE	Extranodal extension
LVI	Lymphovascular invasion
PNI	Perineural invasion