Table 3 Characteristics of the study population according to the level of surgical intervention
Conservative (n = 67) | Split-thickness skin graft (n = 119) | Total (n = 186) | p value | Test | |||||
|---|---|---|---|---|---|---|---|---|---|
n | %a | n | %a | ||||||
Gender | Females | 31 | 46.3 | 47 | 39.5 | 78 | 41.9 | 0.369 | Pearson’s chi-square (df = 1) |
Males | 36 | 53.7 | 72 | 60.5 | 108 | 58.1 | |||
Age | Median (IQR) | 5.70 (2.40–12.10) | 5.10 (1.80–10.00) | 5.30 (1.90–10.50) | 0.403 | Mann-Whitney | |||
TBSA (%)b | Median (IQR) | 2.00 (1.00–5.00) | 4.00 (1.50–8.00) | 3.00 (1.00–7.00) | 0.005 | Mann-Whitney | |||
Fitzpatrick skin typec | 1 | 0 | 0 | 3 | 2.6 | 3 | 1.7 | 0.285 | Pearson’s chi-square (df = 5) |
2 | 16 | 24.6 | 17 | 14.7 | 33 | 18.2 | |||
3 | 29 | 44.6 | 59 | 50.9 | 88 | 48.6 | |||
4 | 9 | 13.8 | 19 | 16.4 | 28 | 15.5 | |||
5 | 4 | 6.2 | 11 | 9.5 | 15 | 8.3 | |||
6 | 7 | 10.8 | 7 | 6.0 | 14 | 7.7 | |||
Asthmad | Yes | 5 | 7.8 | 17 | 14.3 | 22 | 12.0 | 0.199 | Pearson’s chi-square (df = 1) |
Eczemae | Yes | 8 | 12.5 | 15 | 12.6 | 23 | 12.6 | 0.984 | Pearson’s chi-square (df = 1) |
Diabetesf (type 1 or type 2) | Yes | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | N/A | Pearson’s chi-square (df = 1) |
External cause of burng | Flame | 3 | 4.5 | 27 | 22.9 | 30 | 16.3 | 0.003 | Pearson’s chi-square (df = 6) |
Contact | 18 | 27.3 | 39 | 33.1 | 57 | 31.0 | |||
Scald | 41 | 62.1 | 46 | 39.0 | 87 | 47.3 | |||
Sunburn or radiation | 1 | 1.5 | 0 | 0.0 | 1 | 0.5 | |||
Chemical | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | |||
Friction | 3 | 4.5 | 6 | 5.1 | 9 | 4.9 | |||
Electrical | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | |||
Burn location | Head/neck | 15 | 22.4 | 17 | 14.3 | 32 | 17.2 | 0.160 | Pearson’s chi-square (df = 1) |
Chest/abdomen/groin | 26 | 38.8 | 36 | 30.3 | 62 | 33.3 | 0.235 | Pearson’s chi-square (df = 1) | |
Back/buttocks | 10 | 14.9 | 15 | 12.6 | 25 | 13.4 | 0.656 | Pearson’s chi-square (df = 1) | |
Arm | 20 | 29.9 | 41 | 34.5 | 61 | 32.8 | 0.521 | Pearson’s chi-square (df = 1) | |
Hand | 18 | 26.9 | 27 | 22.7 | 45 | 24.2 | 0.523 | Pearson’s chi-square (df = 1) | |
Leg | 20 | 29.9 | 51 | 42.9 | 71 | 38.2 | 0.080 | Pearson’s chi-square (df = 1) | |
Foot | 8 | 11.9 | 18 | 15.1 | 26 | 14.0 | 0.548 | Pearson’s chi-square (df = 1) | |
Genitalia | 2 | 3.0 | 5 | 4.2 | 7 | 3.8 | 0.676 | Pearson’s chi-square (df = 1) | |
Multiple surgical procedures | >1 surgical procedure | 0 | 0.0 | 25 | 21.0 | 25 | 13.4 | <0.0001 | Pearson’s chi-square (df = 1) |
Healed in 14 daysh | Yes | 30 | 52.6 | 25 | 24.3 | 55 | 34.4 | <0.0001 | Pearson’s chi-square (df = 1) |
Wound complicationsi | Yes | 15 | 23.1 | 52 | 46.4 | 67 | 37.9 | 0.002 | Pearson’s chi-square (df = 1) |
Length of stayj (days) | Median (IQR) | 2.00 (0.00–6.25) | 12.00 (4.00–21.00) | 7.00 (1.00–16.00) | <0.0001 | Mann-Whitney | |||
Scar height (SH) | 0 mm (normal–flat) | 40 | 59.7 | 20 | 16.8 | 60 | 32.3 | <0.0001 | Pearson’s chi-square (df = 2) |
>0 to 1 mm (scar evident but not raised) | 14 | 20.9 | 48 | 40.3 | 62 | 33.3 | |||
>1 mm OR scar recon/steroids/laser (raised scar) | 13 | 19.4 | 51 | 42.9 | 64 | 34.4 | |||