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Table 4 Post-education knowledge scores compared between control and intervention subgroups

From: Educational video-assisted versus conventional informed consent for trauma-related debridement surgery: a parallel group randomized controlled trial

Variable Control Intervention p-value
  n Mean Standard deviation n Mean Standard deviation  
Age (years)
  < 36 32 65.31 17.22 39 78.21 13.93 < 0.001
  ≥ 36 40 58.75 18.97 31 65.48 16.30 0.120
Sex
 Female 29 66.21 12.93 34 71.47 17.43 0.185
 Male 43 58.61 20.88 36 73.61 15.15 < 0.001
Education
  < High school 13 44.62 18.98 8 66.25 15.06 0.013
  ≥ High school 59 65.42 16.12 62 73.39 16.29 0.008
Injury severity score
4 55 62.91 18.43 57 74.39 16.48 < 0.001
  > 4 17 57.65 18.21 13 64.62 12.66 0.249
Transferred
 Yes 16 58.75 17.84 19 72.11 14.75 0.021
 No 56 62.50 18.61 51 72.75 16.86 0.004
Arrival time
 8–16 h 30 61.00 16.47 36 72.22 18.07 0.011
 Others 42 62.14 19.82 34 72.94 14.26 0.009
Physician
 Physician A 18 65.00 14.65 16 71.13 20.24 0.186
 Physician B 7 58.57 24.78 10 73.00 13.37 0.140
 Physician C 14 57.86 18.05 6 70.00 10.95 0.146
 Physician D 11 60.00 23.24 12 74.17 13.79 0.087
 Physician E 9 67.78 14.81 14 72.14 18.88 0.564
 Physician F 13 60.00 19.15 12 71.67 16.42 0.117