Table 3.

Evaluation of surface area and depth in the two groups^{†, ‡}

	Group A	Group B	P‐value
Surface area (cm2)
0 week	13·22 ± 4·57	15·10 ± 2·12	0·07
Week 3	9·12 ± 3·69§	14·12 ± 3·15	0·0001*
Week 6	5·12 ± 1·12§	12·14 ± 1·45	0·0001*
Week 9	0·21 ± 0·01§	11·13 ± 4·45	0·0001*
Depth (mm)
0 week	21·12 ± 9·31	22·23 ± 10·78	0·78
Week 3	12·23 ± 3·24§	20·21 ± 3·39	0·0001*
Week 6	7·23 ± 1·14§	18·12 ± 3·94	0·0001*
Week 9	0·11 ± 0·02§	16·12 ± 3·37	0·0001*

^†Group A: negative pressure wound therapy, group B: conventional methods of dressing. Values were presented as mean ± standard deviation (SD).

^‡Statistical difference between the groups has been calculated using student's unpaired t‐test and within the group using paired t‐test.^* P < 0·05, considered as statistically significant.

^§ P = 0·0001^* (paired t‐test, from 0 to subsequent follow‐ups).