Table 4.

Unadjusted and adjusted hazard ratio (HRs) of wound closure^*

	Unadjusted HRs (95% CI)	Adjusted HRs (95% CI)
All ulcers	2·25 (1·73–3·96)	2·63 (1·87–3·70)
All ulcers by grade
Grade I	1·85 (1·26–2·69)	2·73 (1·61–4·62)
Grade II	2·54 (1·77–3·65)	2·74 (1·78–4·21)
Type of ulcers
Diabetic ulcers	2·38 (1·75–3·23)	3·26 (2·21–4·83)
Arterial ulcers	2·33 (1·57–3·48)	2·27 (1·56–3·78)
Venous ulcers	4·90 (1·72–13·59)	6·31 (1·49–26·6)
Pressure ulcers	2·19 (1·03–4·66)	1·72 (0·43–6·95)

^*Non‐NPWT as a reference group.