. 2020 Jun 10;100(13):5796. doi: 10.2340/00015555-3543

Table I.

Literature search method performed in PubMed

Topic	Last search date	Search term	Results
Life expectancy	8 March 2020	(“Skin Neoplasms”[Mesh] OR skin cancer[tiab] OR keratinocyte carcinoma[tiab]) AND (“Carcinoma, Basal Cell”[Mesh] OR “Carcinoma, Squamous Cell”[Mesh] OR nonmelanoma[tiab] OR non-melanoma[tiab] OR basal cell carcinoma[tiab] OR squamous cell carcinoma[tiab] OR keratinocyte carcinoma[tiab] OR Planocellular Carcinoma[tiab]) AND (“Aged”[Mesh] OR elder[tiab] OR older patient[tiab] OR older person[tiab] OR older people[tiab] OR older adult[tiab] OR older cancer patient[tiab] OR old patient[tiab] OR old person[tiab] OR old people[tiab] OR geriatr[tiab] OR old age[tiab] OR octagenarian[tiab] OR nonagenarian[tiab]) AND (“Life Expectancy”[Mesh] OR “Quality-Adjusted Life Years”[Mesh] OR (life[tiab] AND expecta[tiab]) OR life year[tiab] OR qaly[tiab] OR life table[tiab] OR LLE[tiab])	This search identified 53 articles, and after cross-referencing, a total of 6 articles were found relevant (Table II)
Frailty	8 March 2020	(“Skin Neoplasms”[Mesh] OR skin cancer[tiab] OR cutaneous head and neck malignancies[tiab] OR keratinocyte carcinoma[tiab]) AND (“Carcinoma, Basal Cell”[Mesh] OR “Carcinoma, Squamous Cell”[Mesh] OR nonmelanoma[tiab] OR non-melanoma[tiab] OR basal cell carcinoma[tiab] OR squamous cell carcinoma[tiab] OR keratinocyte carcinoma[tiab] OR cutaneous head and neck malignancies[tiab] OR head and neck cancer[tiab] OR Planocellular Carcinoma[tiab]) AND (“Aged”[Mesh] OR elder[tiab] OR older patient[tiab] OR older person[tiab] OR older people[tiab] OR older adult[tiab] OR older cancer patient[tiab] OR old patient[tiab] OR old person[tiab] OR old people[tiab] OR geriatr[tiab] OR old age[tiab] OR octagenarian[tiab] OR nonagenarian[tiab]) AND (“Frailty”[Mesh] OR “Frail Elderly”[Mesh] OR “Geriatric Assessment”[Mesh] OR frail[tiab] OR vulnerab[tiab] OR geriatric assessment*[tiab] OR geriatric-8[tiab] OR g8[tiab] OR g-8[tiab])	This search resulted in 37 hits and 3 relevant studies (Table III)
Comorbidity	8 March 2020	(“Skin Neoplasms”[Mesh] OR skin cancer[tiab] OR keratinocyte carcinoma[tiab]) AND (“Carcinoma, Basal Cell”[Mesh] OR “Carcinoma, Squamous Cell”[Mesh] OR nonmelanoma[tiab] OR non-melanoma[tiab] OR basal cell carcinoma[tiab] OR squamous cell carcinoma[tiab] OR keratinocyte carcinoma[tiab] OR Planocellular Carcinoma[tiab]) AND (“Aged”[Mesh] OR elder[tiab] OR older patient[tiab] OR older person[tiab] OR older people[tiab] OR older adult[tiab] OR older cancer patient[tiab] OR old patient[tiab] OR old person[tiab] OR old people[tiab] OR geriatr[tiab] OR old age[tiab] OR octagenarian[tiab] OR nonagenarian[tiab]) AND (“Comorbidity”[Mesh] OR comorbid[tiab] OR co-morbid[tiab] OR co-exist[tiab] OR multi-morbid*[tiab])	This search identified 208 articles. After cross-referencing, a total of 11 relevant articles were included (Table IV)