BMC Infectious Diseases

Table 3 Univariate comparison of knowledge 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	37.4	48.7	0.000	11.3	33.0	41.1	0.000	8.0	0.261
	Female	37.2	48.2	0.000	11.1	32.51	42.0	0.000	9.5	0.212
Age (years)
	<35	37.4	48.5	0.000	11.0	34.0	42.1	0.000	8.1	0.223
	35-50	35.6	48.5	0.000	12.9	34.0	43.3	0.000	9.4	0.107
	>50	39.5	48.2	0.000	8.7	29.1	38.7	0.000	9.6	0.694
Profesional education
	Lower training (6–12 months)	32.5	43.8	0.002	11.3	23.7	36.0	0.000	12.3	0.897
	Intermediate training (2–3 yrs)	37.3	48.8	0.000	11.5	34.9	43.8	0.000	8.8	0.029
	University/post-graduate	41.8	50.3	0.001	8.6	36.4	40.3	0.044	3.9	0.261
Occupation
	MD/AMD^a	38.8	48.5	0.000	9.7	37.4	43.6	0.000	6.2	0.034
	Pharmacist	37.4	48.0	0.000	10.6	28.0	37.7	0.000	9.7	0.638
	Nurse/midwife	33.3	48.3	0.000	15.0	30.7	42.6	0.000	11.9	0.317
Working places
	Commune health centre	38.9	48.7	0.000	9.8	37.0	44.1	0.000	7.2	0.082
	Village level	29.6	46.2	0.001	16.5	21.7	38.0	0.000	16.3	0.987
	Private clinic	41.4	51.1	0.012	9.8	21.8	27.6	0.091	5.9	0.154
	Pharmacy/drugstore	33.5	47.9	0.000	14.4	32.0	41.7	0.000	9.7	0.154
Total scores
	Mean	37.2	48.4	0.000	11.2	32.7	41.7	0.000	9.0	0.207
	Median	38	50	0.000	11	33	44	0.000	8	0.142
	Minimum	12	19		−14	0	13		−10
	Maximum	53	56		40	53	56		46

^* 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 knowledge scores differences (after - before) between the intervention and the control arms, with p-value adjusted for ICC.
^aMD: Medical doctor AMD: assistant medical doctor.

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