Table I.

Demographic data for patients with chronic ulcers and the reference group, and diagnosis of the first ulcer episode

	Patients n = 3,489		References n = 10,399
	n/median	%/Q1–Q3	n/median	%/Q1–Q3
Females	2,264	65	6,755	65
Age on index day, years	71	59–79	71	59–79
Follow-up time, years Ulcer diagnosis	7	3–13	10	6–17
Venous leg ulcer	1,978	57	–	–
Arterial leg ulcer	388	11	–	–
Mixed leg ulcer	100	3	–	–
Atypical ulcera	303	9	–	–
Other ulcerb	720	20	–	–

^aVasculitis, pyoderma gangraenosum, malignant, rheumatoid or calciphylaxis.

^bPost-traumatic, diabetic foot, infectious, lymphoedema, other oedema, artefactual, pressure, iatrogenic or unspecified.

Q₁–Q₃: quartiles.