Table 1

Demographic differences between comparator (standard care) cohort and low-friction (LF) cohort

Comparator cohortLF cohort
(N=90)(N=131)
Centre (proportion (%))
 A12/90 (13)27/131 (21)
 B33/90 (37)51/131 (39)
 C45/90 (50)53/131 (40)
Ethnicity (proportion white British (%))77/90 (86)106/131 (81)
Age in years (median (IQR))48 (23–62.5) n=8841 (15–64) n=131
TBSA (median (IQR))3.3 (1.5–7.5) n=904 (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 neck24/90 (27)40/131 (31)
 Anterior chest23/90 (26)34/131 (26)
 Posterior chest or back13/90 (14)23/131 (18)
 Upper limb29/90 (32)48/131 (37)
 Hand or wrist21/90 (23)31/131 (24)
 Abdomen8/90 (9)18/131 (14)
 Buttocks10/90 (11)9/131 (7)
 Perineum6/90 (7)2/131 (2)
 Lower limb31/90 (34)63/131 (48)
 Foot or ankle16/90 (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=9071.8 (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=902 (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.