Table 2 Poisson regression with robust variance estimation to assess the effect of the intervention on maintenance of breastfeeding at 2 years of age

1 – Intervention group

0.87 (0.58–1.30)

2 – Model 1 + propensity score^a

0.93 (0.62–1.40)

3 – Model 2 + cohabitation with grandmother^b

0.91 (0.60–1.37)

4 – Model 3 + child’s age^b

0.90 (0.57–1.43)

5 – Model 4 + mother’s education level^b

0.88 (0.55–1.40)