Table 2.

Adjusted Breastfeeding Rates by Payer, First Differences, DDs

	2009	2010	2011	2012	2013	2014
Source of payment for delivery
Private Health Insurance	0.58 (0.0004)	0.60 (0.0004)	0.63 (0.0004)	0.65 (0.0004)	0.66 (0.0004)	0.70 (0.0004)
Medicaid	0.57 (0.0004)	0.59 (0.0004)	0.60 (0.0004)	0.62 (0.0004)	0.64 (0.0004)	0.67 (0.0004)
First difference	0.008 (0.0006)	0.016 (0.0006)	0.028 (0.0006)	0.025 (0.0006)	0.023 (0.0006)	0.033 (0.0005)
DD—versus 2009					0.015 (0.0008)	0.025 (0.0008)
DD—versus 2010					0.007 (0.0008)	0.017 (0.0008)
DD—versus 2011					−0.005 (0.0008)	0.005 (0.0007)

N = 17,985,584 births. Predicted probability of breastfeeding adjusted for covariates listed in equation (1). Full set of logistic regression results are in Table S1. All values are statistically significant at p < .01 or better.