Imdad et al. (2011); various

Scale/Scope: 
varied
Evaluation Design: 
Literature review – 53 RCTs and quasi-RCTs
Outcomes: 
Outcomes Measured: 
EBF at 4-6 weeks - in developed and developing countries
Results: 
RR=2.37
P-values/CIs: 
(95% CI: 1.33- 4.24) p<0.001
High Impact Practices: 
Exclusive breastfeeding
Outcomes Measured: 
EBF at 4-6 weeks- in developing countries
Results: 
RR = 1.89
P-values/CIs: 
(95% CI: 1.50- 2.37) p<0.001
High Impact Practices: 
Exclusive breastfeeding
Outcomes Measured: 
EBF at 6 months- in developed and developing countries
Results: 
RR=1.43
P-values/CIs: 
(95% CI: 1.28- 1.60) p<0.001
High Impact Practices: 
Exclusive breastfeeding
Outcomes Measured: 
EBF at 6 months- in developing countries
Results: 
RR = 6.32
P-values/CIs: 
(95% CI: 3.35- 11.93) p<0.001
High Impact Practices: 
Exclusive breastfeeding
Outcomes Measured: 
Breastfeeding at 6 months - in developed and developing countries
Results: 
RR = 1.12
P-values/CIs: 
(95% CI: 1.01 -1.24)
High Impact Practices: 
Continued breastfeeding