Table 5 Subgroup analysis in trials of home-based PNC visit on exclusive breastfeeding outcome
Predictor variables | No. of trials | Random-effects model | Fixed-effects model | Test for heterogeneity | p-value for subgroup heterogeneity | |||
|---|---|---|---|---|---|---|---|---|
OR | 95% CI | OR | 95% CI | I2 (%) | p-value | |||
Overall | 6 | 2.88 | 1.57–5.29 | 4.29 | 4.02–4.57 | 98.2 | < 0.01 | NA |
Number of PNC visits | ||||||||
  > 3 | 3 | 3.54 | 1.64–7.65 | 3.89 | 3.36–4.71 | 93.3 | < 0.01 | 0.345 |
  < = 3 | 3 | 2.36 | 0.83–6.71 | 4.34 | 4.05–4.66 | 99.2 | < 0.01 | |
Home visit coverage | ||||||||
  > 70% | 4 | 4.06 | 2.60–6.36 | 5.42 | 5.05–5.82 | 93.4 | < 0.01 | < 0.01 |
  < = 70% | 2 | 1.51 | 1.30–1.76 | 1.51 | 1.30–1.76 | 0.0 | 0.483 | |
Follow-up period | ||||||||
  > 4 weeks | 3 | 5.69 | 5.29–6.12 | 5.69 | 5.29–6.12 | 0.0 | < 0.01 | < 0.01 |
  < =4 weeks | 3 | 1.53 | 1.33–1.76 | 1.53 | 1.33–1.76 | 0.0 | < 0.01 | |
Age at exclusive breastfeeding | ||||||||
 1 month | 3 | 3.65 | 1.37–9.76 | 4.88 | 4.54–5.25 | 98.6 | < 0.01 | < 0.01 |
  > 1 month | 3 | 2.29 | 0.4–5.56 | 2.64 | 2.30–3.04 | 97.3 | < 0.01 | |
Type of provider | ||||||||
 Healthcare provider | 3 | 3.73 | 2.60–8.69 | 5.47 | 5.07–5.91 | 95.6 | < 0.01 | < 0.01 |
 CHW | 3 | 2.25 | 1.01–5.29 | 2.31 | 2.05–2.61 | 97.7 | < 0.01 | |
Publication year | ||||||||
  < =2008 | 2 | 2.94 | 0.91–9.50 | 2.40 | 1.78–3.23 | 92.5 | < 0.01 | < 0.01 |
  > 2008 | 4 | 2.86 | 1.36–6.04 | 4.41 | 4.13–4.71 | 98.8 | < 0.01 | |