Table 5

Adjusted effect of the intervention on health worker confidence scores, using different multivariable analysis methods (effect estimate and 95% CI)

Variable	Method 1		Method 3
Variable	Effect estimate	95% CI	Effect estimate	95% CI
Confidence Score at baseline	0.4	0.3 to 0.6^*	N/A	N/A
Intervention	2.4	0.3 to 4.5^*	1.5	−2.2 to 5.1
Follow-up time	N/A	N/A	0.5	−1.5 to 2.5
Cadre of heath professional versus community level
Trained health professional	3.1	0.3 to 5.9^*	3.7	1.5 to 5.9^*
Enrolled nurse	−0.8	−4.3 to 2.7	−0.7	−3.1 to 1.6
Ugu District versus Tshwane District	0.00	−2.1 to 2.1	−1.	−3.2 to 1.2
Age category versus 23–35 years
36–41 years	−1.0	−3.7 to 1.6	−0.1	−2.7 to 2.5
42–46 years	0.3	−2.9 to 3.4	0.4	−1.2 to 2.9
47–54 years	1.4	−0.7 to 3.5	−1.3	−3.4 to 0.8
Over 54 years	−2.5	−5.7 to 0.7	−0.9	−4.0 to 2.2
Work experience <5 years vs ≥5 years	−0.5	−3.4 to 2.4	−1.9	−3.7 to −0.2^*
Received training or information at work about the revised policy	0.05	−1.5 to 1.6	1.7	−0.3 to 3.6
Received any training about managing common breastfeeding problems?	−0.6	−3.2 to 2.1	1.8	−0.5 to 4.1
Ever received any training about how to assess and support antiretroviral therapy adherence for HIV-positive women?	0.8	−2.1 to 3.7	5.7	3.5 to 7.9