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Table 4 Univariate comparison of practice improvement between the STI intervention arm and control arm

From: Improved knowledge and reported practice regarding sexually transmitted infections among healthcare providers in rural Vietnam: a cluster randomised controlled educational intervention

  STI intervention arm Control arm  
Mean score (n = 160) Mean score (n = 144)
Category Before After p * Difference Before After p * Difference p **
Sex          
  Male 18.9 21.9 0.003 2.9 14.6 18.4 0.000 3.8 0. 857
  Female 16.8 21.8 0.001 5.0 14.9 18.5 0.000 3.6 0.228
Age (years)          
  <35 16.9 22.0 0.001 5.2 14.8 18.5 0.002 3.6 0.442
  35-50 16.9 22.4 0.000 5.5 16.3 19.8 0.001 3.4 0.052
  >50 19.4 20.7 0.149 1.3 12.5 16.5 0.004 4.0 0.291
Education          
  Lower training (6–12 months) 16.0 16.2 0.892 0.2 13.5 16.6 0.002 3.2 0.358
  Intermediate training (2–3 yrs) 17.5 22.6 0.000 5.2 15.3 19.1 0.000 3.8 0.047
  University/post-graduate 19.6 22.2 0.159 2.6 14.6 18.3 0.008 3.8 0.767
Occupation          
  MD/AMDa 18.2 22.3 0.000 4.1 15.7 19.6 0.000 3.9 0.494
  Nurse/midwife 17.8 21.1 0.079 3.3 13.8 17.0 0.018 3.3 0.936
  Pharmacist 15.7 21.1 0.014 5.3 14.4 18.1 0.000 3.7 0.279
Working places          
  Commune health centre 18.2 22.2 0.001 4.0 16.0 19.6 0.001 3.6 0.386
  Village level 18.1 18.7 0.503 0.6 13.6 17.6 0.002 3.9 0.184
  Private clinic 18.0 22.0 0.024 4.0 11.3 13.0 0.445 1.8 0.173
  Pharmacy/drugstore 14.8 21.7 0.002 6.8 13.6 18.2 0.001 4.6 0.173
Total scores          
  Mean 17.6 21.8 0.000 4.3 14.8 18.5 0.000 3.6 0.581
  Median 18 23 0.000 4 16 19 0.000 3 0.388
  Minimum 1 0   −21 1 3   −12  
  Maximum 28 34   29 26 33   22  
  1. *Wilcoxon test (T-test for mean of total scores) to compare related samples (before and after intervention) of each arm, with p-value adjusted for ICC.
  2. **Mann–Whitney test (T-test for mean of total scores) to compare practice scores differences (after - before) between the STI intervention and the control arm, with p-value adjusted for ICC.
  3. aMD: Medical doctor; AMD: assistant medical doctor.