Demographic differences between comparator (standard care) cohort and low-friction (LF) cohort
| Comparator cohort | LF cohort | |
| (N=90) | (N=131) | |
| Centre (proportion (%)) | ||
| A | 12/90 (13) | 27/131 (21) |
| B | 33/90 (37) | 51/131 (39) |
| C | 45/90 (50) | 53/131 (40) |
| Ethnicity (proportion white British (%)) | 77/90 (86) | 106/131 (81) |
| Age in years (median (IQR)) | 48 (23–62.5) n=88 | 41 (15–64) n=131 |
| TBSA (median (IQR)) | 3.3 (1.5–7.5) n=90 | 4 (1.5–10.0) n=131 |
| Gender (proportion male (%)) | 53/90 (59) | 78/131 (60) |
| Burn type (proportion scalds (%)) | 38/90 (42) | 37/131 (28) |
| Location (proportion (%)) | ||
| Head and neck | 24/90 (27) | 40/131 (31) |
| Anterior chest | 23/90 (26) | 34/131 (26) |
| Posterior chest or back | 13/90 (14) | 23/131 (18) |
| Upper limb | 29/90 (32) | 48/131 (37) |
| Hand or wrist | 21/90 (23) | 31/131 (24) |
| Abdomen | 8/90 (9) | 18/131 (14) |
| Buttocks | 10/90 (11) | 9/131 (7) |
| Perineum | 6/90 (7) | 2/131 (2) |
| Lower limb | 31/90 (34) | 63/131 (48) |
| Foot or ankle | 16/90 (17) | 26/131 (20) |
| Significant comorbidity (proportion yes (%)) | 32/89 (36) | 36/131 (27) |
| ASA grade (proportion normal healthy patient (%)) | 45/89 (51) | 59/131 (45) |
| Weight of patient (median (IQR)) | 69.5 (58.7–81.5) n=90 | 71.8 (55.3–86.0) n=131 |
| Perioperative antibiotics (proportion yes (%)) | 73/90 (81) | 85/131 (65) |
| Time to first graft in days (median (IQR)) | 1 (1–5)n=90 | 2 (0–4) n=131 |
Text highlighted in bold shows 95% CI not crossing 1 in two-sample proportion tests.
ASA, American Society of Anesthesiology; TBSA, total body surface area.