Table 1.

Demographic features of patients in the control (wet‐to‐moist therapy) group (26) and the NPWT groups with and without matching

Characteristic	Control group	NPWT‐unmatched group	NPWT‐matched group
No. of patients	586	2091	1135
Age, years (mean)	58	65·2 ± 12·7	58·5 ± 9·4
Gender (% male)	73·2	64·5*	64·5*
Initial wound size, cm2 (mean)	1·61	13·5 ± 16·0	13·8 ± 15·8
Wound duration, weeks (mean)	30	22·9 ± 24·0	26·5 ± 24·7

NPWT, negative pressure wound therapy.

^* P < 0·01 using a Fisher’s exact test for comparing the observed proportion with that seen in the control group.