Evaluation of a quality improvement intervention to prevent mother-to-child transmission of HIV (PMTCT) at Zambia defence force facilities

Table 4 ANC performance: results of bivariate and multivariate analyses of percentage of ANC verification criteria achieved during ANC consultations, by data collection round and study condition

	Bivariate analysis				Multivariate analysis ^a
	% achieved at:		Change from baseline to endline within group		Adjusted p-value for change within group	p-value for interaction
ANC performance standard and study condition	Baseline (n=191)	Endline (n=196)	% points	p-value
ANC supplies and equipment
Comparison	73.2	69.7	-3.5	0.004	0.626	0.135
Intervention	77.8	87.4	+9.6	0.001	0.001	0.135
Interpersonal communication
Comparison	98.4	86.7	-11.7	0.001	0.073	0.936
Intervention	97.7	85.1	-12.6	0.001	0.027
History taking
Comparison	48.1	51.1	+3.0	0.328	0.797	0.797
Intervention	50.0	56.7	+6.7	0.032	0.352	0.797
Physical exam
Comparison	72.5	59.4	-13.1	0.001	0.414	0.559
Intervention	82.6	79.1	-3.5	0.095	0.584	0.559
Obstetric examination
Comparison	60.0	49.5	-10.5	0.001	0.121	0.239
Intervention	54.8	54.9	+0.1	0.967	0.654	0.239
Individualized care
Comparison	58.9	52.6	-6.3	0.032	0.719	0.244
Intervention	60.8	79.7	+18.9	0.001	0.004	0.244
Follow-up
Comparison	80.3	55.7	-24.6	0.001	0.208	0.123
Intervention	79.0	86.1	+7.1	0.002	0.173	0.123
Syphilis management
Comparison	13.6	5.8	-7.8	0.124	0.010	0.114
Intervention	16.2	9.2	-7.0	0.203	0.234	0.114
Overall ANC score
Comparison	65.4	58.8	-6.6	0.001	0.583	0.307
Intervention	67.2	74.1	+6.9	0.001	0.084

^a Results from generalized linear regression with Poisson distribution adjusted for ZDF branch and clustering within a facility.

ISSN: 1472-6963