Table 1 Sampling and sample size for quantitative and qualitative methods

Women in post-partum period

Sampling women survey: 10 women were interviewed from each of the 50 health centres.

Systematic random sampling was used to select 10 women who were 6 hours to 6 weeks in the post-partum period. Women were selected from all eligible women who were in immediate post-partum care or who came to the health centre for post-natal care during the 2 -3 days visit to each of the health centres.

Sample size for women interview

\({n}_1={n}_2=\frac{{\left({Z}_{a/2}\sqrt{2\overline{pq}}+{Z}_{\beta}\sqrt{p_1{q}_1+{p}_2{q}_2}\right)}^2}{\Delta ^2}\)

Calculate \(\overline{p}=\frac{P_1+{P}_2}{2}\)

= 0.25+  0.15 = 0.2

2

∆ = p₁-p₂

= 0.25 - 0.15 = 0.1

n1 = n2 = (1.96 √.2*.8 + 0.84 √0.25*0.75+  0.15*0.85)²

(0.1)²

n1 = 250 n2 = 250 n = n1 + n2 = 500

A study in Addis Ababa reported client satisfaction of 20% on the intra-partum care [11]

P1 = % client satisfied of care at facilities with high quality score = 25%

P2 = % client satisfied of care at facilities with low quality score = 15%

95% Confidence interval (Z∝/2 = 1.96)

Power 80% (Zβ = 0.84)

Midwife & Manager

Purposeful sampling was applied to select program managers and midwives

20 midwives and 13 health centre managers were purposefully selected

Sample goes until saturation achieved