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Table 4 Reported skin tear injuries: incidence, skin tear-free days (STFD), size and severity using Payne-Martin (PM) and STAR grading systems

From: Pilot parallel randomised controlled trial of protective socks against usual care to reduce skin tears in high risk people: ‘STOPCUTS’

  Socks group TAU group Total
Total allocated 44 46 90
Participants with skin tears 8 (18.18%)* 10 (21.74%) 18 (20%)
Total number of skin tear injuries 10 21 31
No. with 1 injury 6 6 12
No. with 2 injuries 2 2 4
No. with 3 injuries 0 1 1
No. with 8 injuries 0 1 1
Incidence (people suffering tears) 8/44 = 0.18 10/46 = 0.22 RR = 0.84 (0.37 to 1.88)
Incidence (tears/episodes of care) 10/44 21/46 RR = 0.50 (0.26 to 0.91)
Mean (sd) total area of injury (cm2) 1.76 (1.39) 4.26 (7.61) (missing data on case 3001)  
Median (IQR) total area of injury (cm2) 1.5 (2.92) 2 (2.18) (missing data on case 3001)  
Median (IQR) duration (days) 26.5 (17.75) 17 (10.75) [missing data on case 3001]  
Mean (sd) STFD for whole group (days) 107.2 (12.43) 105.72 (16.5)  
Median (IQR) STFD for whole group (days) 112 (0) 112 (0)  
PM category Ia 3 1 4
PM category Ib 1 4 5
PM category IIa 2 8 10
PM category IIb 2 2 4
PM category III 1 6 7
PM category missing 1   1
STAR category 1a 3 2 5
STAR category 1b 1 3 4
STAR category 2a   4 4
STAR category 2b 4 7 11
STAR category 3 1 5 6
STAR category missing 1   1
  1. *Participant was definitely wearing intervention socks at the time of injury