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Table 4 Pre course, post course and follow-up scores: confidence, perceived skill, knowledge and attitudes

From: Managing deliberate self-harm in young people: An evaluation of a training program developed for school welfare staff using a longitudinal research design

   Percentage Pre vs. Post course: test of change p-value# Post course vs. 6 month: test of stability p-value
   Pre course *n = 186–197 Post course *n = 176–182 6 month *n = 74–76   
Confidence MH L 14.2 2.3 5.3 < 0.001 < 0.001
  M 35.0 22.7 23.7   
  H 50.8 75.0 71.1   
Confidence SH L 26.9 1.1 3.9 < 0.001 < 0.001
  M 44.7 21.7 25.0   
  H 28.4 77.1 71.1   
Skill MH L 22.3 4.0 6.7 < 0.001 < 0.001
  M 41.1 26.1 25.3   
  H 36.5 69.9 68.0   
Skill SH L 34.2 3.4 5.3 < 0.001 0.001
  M 45.4 19.9 26.7   
  H 20.4 76.7 68.0   
KDS L 2.2 1.7 1.3 < 0.001 0.77
  M 59.7 31.8 28.0   
  H 38.2 66.5 70.7   
ACS L 3.7 2.2 1.3 0.22 0.004
  M 32.4 38.0 36.0   
  H 63.8 59.8 62.7   
ASP L 6.4 3.4 5.3 0.015 < 0.001
  M 23.4 15.6 27.6   
  H 70.2 81.0 67.1   
ACS-Effectiveness L 0.0 0.0 0.0 0.034 0.999
  M 12.7 7.7 5.3   
  H 87.3 92.3 94.7   
ACS-Negativity L 0.0 0.0 0.0 0.058 0.058
  M 5.4 2.2 2.7   
  H 94.6 97.8 97.3   
ACS-Worry L 9.7 15.3 9.5 0.12 < 0.001
  M 79.6 75.0 79.7   
  H 10.8 9.7 10.8   
ACS-Support L 1.0 0.5 0.0 0.71 < 0.001
  M 9.9 9.3 10.7   
  H 89.0 90.1 89.3   
  1. * The sample size for different measures differ slightly at each time point due to missing values.
  2. # Mcnemar test: p < 0.05 means significant change at the 5% level.
  3. Fisher Exact test: p < 0.05 means significant stability at the 5% level.
  4. L = Low, M = Medium, H = High.
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