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

^*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.

^**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.

^aMD: Medical doctor; AMD: assistant medical doctor.