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

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.