Table 4.

Multivariate quantile regression and ordinary least squares (OLS) coefficients for 2 year BMI-for-age Z-score ¹

	OLS mean	10th percentile	20th percentile	30th percentile	40th percentile	50th percentile	60th percentile	70th percentile	80th percentile	90th percentile
Not breastfed at 12 weeks = Yes [Ref: No]	0.32 (0.04, 0.61)	0.04 (−0.36, 0.44)	0.08 (−0.35,0.52)	0.31 (−0.10,0.72)	0.29 (−0.02,0.60)	0.37 (0.07,0.66)	0.34 (0.05,0.63)	0.46 (0.18, 0.74)	0.49 (0.16, 0.83)	0.68 (0.41, 0.94)
R-squared/pseudo R-squared	0.2182	0.1204	0.1238	0.1299	0.1251	0.1165	0.1147	0.1200	0.1216	0.1640

¹Values are ordinary least square (OLS) and quantile regression beta-coefficients (adjusted for birth weight, weight velocity between 12–24 weeks, 12 week BMI-for-age Z-score, maternal education, study site and intervention arm) with respective 95% confidence intervals in brackets. 466 observations were assessed in the models. With the exception of study arm, only variables that had significant association with BMI-for-age Z-score in the bivariate analysis were included in the final model. R-squared/pseudo R-squared.