Fig. 3
Results of adjusted mixed effects modela,b examining WAZ by time and treatment. aModel was adjusted for variables found to be significantly associated with the completion of any home visit and included maternal age, pre-pregnancy BMI, and marital status. The model also included breastfeeding status as a time-varying covariate. b95% confidence intervals: Birth [OPG (− 0.11, 0.21), IPG (− 0.01, 0.29)], 3 months [OPG (− 0.40, − 0.07), IPG (− 0.27, 0.06)], 6 months [OPG (− 0.07, 0.29), IPG (− 0.05, 0.30)], 9 months [OPG (0.05, 0.44), IPG (0.11, 0.50)], 12 months [OPG (0.10, 0.53), IPG (0.17, 0.60)], and 15 months [OPG (0.14, 0.62), IPG (0.20, 0.68)]