Table 3 Relationship between serum 25(OH)VD levels and the clinical features of DFU patients [( ± s), n (%)]
|  | High level group (n = 58) | Low level group (n = 98) | P value |
|---|---|---|---|
Age (y) | 54.8 ± 10.8 | 56.2 ± 11.3 | 0.426 |
Sex | Â | Â | 0.273 |
 Male | 36 (62.1) | 52 (53.1) |  |
 Female | 22 (37.9) | 46 (46.9) |  |
Ulcer area (cm2) | Â | Â | 0.856 |
 ≤ 5 | 8 (13.8) | 16 (16.3) |  |
 5 ~ 10 | 32 (55.2) | 55 (56.1) |  |
 > 10 | 18 (31.0) | 27 (27.6) |  |
Ulcer duration (week) | Â | Â | 0.043 |
 ≤ 6 | 10 (17.2) | 11 (11.2) |  |
 6 ~ 10 | 33 (56.9) | 42 (42.9) |  |
 > 10 | 15 (25.9) | 45 (45.9) |  |
Wagner grade | Â | Â | 0.005 |
 II | 14 (24.1) | 6 (6.1) |  |
 III | 35 (60.3) | 73 (74.5) |  |
 IV | 9 (15.6) | 19 (19.4) |  |
Severity of infection | Â | Â | 0.003 |
 Mild | 14 (24.1) | 6 (6.1) |  |
 Moderate | 28 (48.3) | 66 (67.3) |  |
 Severe | 16 (27.6) | 26 (26.6) |  |
Recurrent DFU | 12 (20.7) | 39 (39.8) | 0.014 |
Detection rate of drug resistant bacteria | 13 (22.4) | 38 (38.8) | 0.035 |
Outcome of ulcer after 8Â weeks | Â | Â | 0.031 |
 Healing | 37 (63.8) | 45 (45.9) |  |
 Non-healing | 21 (36.2) | 53 (54.1) |  |
Amputation rate (%) | Â | Â | 0.035 |
 Amputation | 9 (15.5) | 30 (30.6) |  |
 Non-amputation | 49 (84.5) | 68 (69.4) |  |