TABLE 1.

Search terms and – strategy.

Full search strategies MEDLINE via PubMed
(“venous leg ulcer*”[Title/Abstract] OR (“varicose ulcer”[MeSH Terms] AND “leg ulcer”[MeSH Terms])) AND (“prevalence”[Title] OR “incidence”[Title] OR “occurrence”[Title] OR “epidemiolog*”[Title])
Filters: none Remarks: none	Number of articles: 57
Date: 10.06.2021
Full search strategies CINAHL
(TI “venous leg ulcer*” OR AB “venous leg ulcer*” OR ((MH “Venous Ulcer”) AND (MH “Leg ulcer”))) AND (TI prevalence OR TI incidence OR TI occurrence OR TI epidemiolog*)
Filters: none Remarks: none	Number of articles: 22
Date: 10.06.2021
Full search strategies Embase
(‘varicosis’/de AND ‘leg ulcer’/de) OR (‘venous leg ulcer*’:ti,ab,kw) AND (prevalence:ti OR incidence:ti OR occurrence:ti OR epidemiolog*:ti OR ‘prevalence’/exp/mj OR ‘ulcer incidence’/exp)
Filters: none Remarks: ‘venous leg ulcer*’:ti,ab,kw: search Title, Abstract, et author keywords Prevalence/exp/mj: search with exploded and major topic Incidence/exp: search with exploded term	Number of articles: 72
Date: 10.06.2021
Full search strategies Web of Science
(TS = [“venous leg ulcer*”]) AND TI = (prevalence or incidence or occurrence or epidemiolog*):
Filters: none Remarks: TS corresponds to the search in Title, Abstract, AND other keywords	Number of articles: 37
Date: 14.06.2021
Full search strategies Cochrane Database of systematic reviews
(Venous leg ulcer* OR [varicose ulcer AND venous leg]):ti,ab,kw AND (prevalence or incidence or occurrence or epidemiolog*):ti
Filters: none Remarks: same results ans same references if using only ‘venous leg ulcer’	Number of articles: 3
Date: 16.06.2021
Full search strategies LiSSa
((ulcère variqueux.tl) OU (ulcère variqueux.mc) OU (ulcère veineux.tl) OU (ulcère veineux.mc)) ET ((ulcère de la jambe.tl) OU (ulcère de la jambe.mc)) ET ((prévalence.ti) OU (incidence.ti) OU (occurrence.ti) OU (epidemiolog*.ti))
Filters: none Remarks: ((ulcère variqueux.tl) OU (ulcère variqueux.mc) OU (ulcère veineux.tl) OU (ulcère veineux.mc)) ET ((ulcère de la jambe.tl) OU (ulcère de la jambe.mc)): recherche dans Titre, mots‐clés et résumé	Number of articles: 4
Date: 14.06.2021
Full search strategies Scopus
(TITLE‐ABS‐KEY [“venous leg ulcer*” OR “varicose ulcer” AND “leg ulcer”]) AND (TITLE [“prevalence” OR “incidence” OR “occurrence” OR “epidemiolog*”])
Filters: none Remarks: none	Number of articles: 54
Date: 16.06.2021
Full search strategies Google Scholar
“venous leg ulcer” intitle:prevalence|incidence|occurrence|epidemiology
Filters: none Remarks: | corresponds to the operator OR No *, as it does not have quite the same function as in other tools and google scholar recognises plurals of nouns and some derived terms automatically	Number of articles: 103
Date: 14.06.2021