Table 2.
Baseline characteristics of patients
| Non‐NPWT patients | NPWT patients | P value | |
|---|---|---|---|
| Age, mean (SD) | 61·3 (14·5) | 60·8 (14·4) | >0·05 |
| Gender, N (%) | |||
| Male | 99 (57·9) | 99 (57·9) | >0·05 |
| Female | 72 (42·1) | 72 (42·1) | >0·05 |
| Race, N (%) | |||
| White | 62 (36·7) | 76 (44·4) | |
| Black | 70 (41·4) | 69 (40·4) | |
| Hispanic | 30 (17·8) | 19 (11·1) | |
| Others | 7 (4·1) | 7 (4·1) | >0·05 |
| Ulcer Location, N (%) | |||
| Dorsal | 33 (19·3) | 29 (16·9) | |
| Plantar | 37 (21·6) | 36 (21·1) | |
| Toe | 15 (8·8) | 60 (35·2) | |
| Heel | 36 (21·1) | 19 (11·1) | |
| Leg | 50 (29·2) | 27 (15·7) | >0·05 |
| Ulcer grade*, N (%) | |||
| I | 67 (39·2) | 85 (49·7) | |
| II | 100 (58·5) | 85 (49·7) | |
| Undefined | 4 (2·3) | 1 (0·6) | >0·05 |
| Type of ulcer, N (%) | |||
| Diabetic ulcers | 118 (69·4) | 140 (81·8) | <0·05 |
| Arterial ulcers | 59 (34·9) | 114 (66·7) | <0·01 |
| Venous ulcers | 18 (10·6) | 15 (8·8%) | >0·05 |
| Pressure ulcers | 17 (10·1) | 23 (13·45) | >0·05 |
| Disease severity | |||
| Type of comorbidities | |||
| Infection, N (%) | 154 (91·1) | 136 (79·5) | >0·05 |
| Coronary heart disease, N (%) | 74 (43·3) | 79 (47·9) | >0·05 |
| Cerebrovascular disease, N (%) | 18 (10·5) | 6 (3·5) | <0·05 |
| Diabetes, N (%) | 130 (76·0) | 140 (84·9) | >0·05 |
| Peripheral arterial disease, N (%) | 67 (39·2) | 51 (30·9) | >0·05 |
| Chronic renal disease, N (%) | 48 (28·1) | 82 (49·7) | <0·01 |
| Congestive heart disease, N (%) | 66 (38·6) | 49 (29·7) | >0·05 |
| Smoking, N (%) | 59 (34·5) | 67 (40·6) | >0·05 |
| History of minor amputation, N (%) | 22 (12·87) | 24 (14·4) | >0·05 |
| History of major amputation, N (%) | 15 (8·8) | 14 (8·4) | >0·05 |
| Number of comorbidities, N (%) | |||
| 0 through 1 | 40 (23·4) | 34 (19·9) | |
| 2 through 4 | 108 (63·2) | 100 (58·5) | |
| 5 or more | 23 (13·4) | 37 (21·6) | >0·05 |
| Health service utilisation | |||
| Inpatient ulcer service, N (%) | 114 (66·7) | 162 (94·) | <0·01 |
| 5+ outpatient ulcer service, N (%) | 150 (87·7) | 123 (71·9) | <0·01 |
NPWT, negative pressure wound therapy.
*
Grade I, superficial ulcer involving skin only; Grade II, deep ulcer involving muscle/tendon/bone.