Table 1

Data collected at baseline assessment

Clinical	Radiological	Functional	Histology	Treatment received
Age	Laryngeal subsite	EORTC QLQ-C30	From biopsy	Primary non-surgical treatment Chemotherapy agent and dose Radiotherapy dose and fractionation
Date of birth	Cartilaginous framework involvement	EORTC HN35	Histology	Primary surgical management-procedure performed
Gender at birth	Maximum dimension	Vocal cord function	Grade	Postoperative chemotherapy
NHS no	Extralaryngeal spread	DIGEST VFSS/FEES scale	Differentiation	Postoperative radiotherapy
Treatment hospital	Bilateral involvement	PSS-HN	Digital photography if available	Date of completion of treatment
GP postcode	Tumour max SUV	MDADI	From resection (if performed)
Date of biopsy	Signs of aspiration	VHI-10	Digital photography if available
Date of initiation of treatment	Cervical lymph node involvement	100 mL water swallow test	Primary site
Aim of treatment	Evidence of extra-capsular spread	Maximum phonation time	Dimension
TNM stage		GRBAS scale	Primary site
Smoking history		Voice recording	Uni/multifocal
Alcohol history			Histology
ACE score			Differentiation
Clinical frailty scale			Invasiveness
WHO performance			Invasive front
Weight			Perineural invasion
Presence of tube feeding			Lymphovascular invasion
			Closest margin
			Pathological TNM staging
			Neck disease
			Total no of nodes dissected
			Total no of involved nodes

DIGEST, Dynamic Imaging Grade of Swallowing Toxicity; EORTC HN35, European Organization for the Research and Treatment of Cancer Head and Neck Cancer Quality of Life Questionnaire; EORTC QLQ-C30, European Organization for the Research and Treatment of Cancer Quality of Life Questionnaire; FEES, Fiberoptic Endoscopic Evaluation of Swallowing; GP, General Practitioner; GRBAS, Grade, Roughness, Breathiness, Aesthenia, Strain Scale; MDADI, MD Anderson Dysphagia Inventory; NHS, National Health Service; PSS-HN, Performance Status Scale for Head & Neck Cancer Patients; SUV, Standardised Uptake Values; TNM, Tumour, Node, Metastasis; VFSS, Videofluoroscopic Swallow Study; VHI, Voice Handicap Index.