Table 1.
Patient demographics and baseline characteristics
| Grafix (n = 50) | Control (n = 47) | P‐value | 95% confidence interval | ||
|---|---|---|---|---|---|
| Mean age, in years (SD) | 55·5 (11·5) | 55·1 (12·0) | 0·849 | −5·2 | 4·3 |
| Age ≥65 years (N, %) | 11 (22%) | 13 (27·7%) | 0·521 | 0·292 | 1·861 |
| Male (N, %) | 33 (66·0%) | 35 (74·5%) | 0·365 | 0·276 | 1·603 |
| Mean years DM (SD) | 15·4 (11·1) | 14·0 (11·0) | 0·549 | −5·80 | 3·10 |
| Mean BMI (SD) | 33·5 (7·7) | 32·2 (7·9) | 0·419 | −4·40 | 1·90 |
| BMI ≥30 (N, %) | 36 (72%) | 25 (53·2%) | 0·057 | 0·975 | 5·253 |
| Race (N, %) | |||||
| White or Caucasian | 35 (70%) | 32 (68·1%) | 0·581 | −1·847 | 2·073 |
| Black or African American | 13 (26%) | 12 (25·5%) | 0·521 | −1·866 | 2·054 |
| American Indian or Alaska Native | 1 (2%) | 1 (2·1%) | 0·482 | −1·932 | 1·988 |
| Other | 1 (2%) | 2 (4·3%) | 0·263 | −1·947 | 1·973 |
| Mean wound size at baseline (cm2, SD) | 3·41 (3·23) | 3·93 (3·22) | 0·433 | −0·80 | 1·80 |
| Wound duration (days, SD) | 115·0 (72·6) | 122·9 (83·9) | 0·621 | −23·7 | 39·5 |
| Mean glycated haemoglobin (SD) | 8·0 (1·6) | 7·8 (1·5) | 0·511 | −0·90 | 0·4 |
| Glycated haemoglobin >9% (N, %) | 14 (28%) | 13 (27·7%) | 0·970 | 0·418 | 2·473 |
| Mean albumin (g/dl) (SD) | 4·0 (0·4) | 4·0 (0·3) | 0·418 | −0·20 | 0·10 |
| Albumin >3·5 g/dl (N, %) | 44 (88%) | 42 (89·4%) | 0·263 | −1·947 | 1·973 |
| Ankle bachial index (ABI) | |||||
| ABI 0·07–0·90 (N, %) | 10 (21·7%) | 10 (22·2%) | 0·44 | −1·89 | 2·03 |
| ABI >0·90 | 36 (78·3%) | 35 (77·8%) | 0·39 | −1·89 | 2·00 |
DM, diabetes mellitus.