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. Author manuscript; available in PMC: 2015 Dec 1.
Published in final edited form as: J Dev Orig Health Dis. 2014 Aug 29;5(6):435–447. doi: 10.1017/S2040174414000415

Figure 1. Breastfeeding in First Six Months of Life (Exclusively-breastfed vs. Formula-fed Only): PS Kernel Density Estimates and Common Support.

Figure 1

The solid (exclusive breastfeeding) and dotted (exclusive formula) curves indicate the within-group smoothed histograms for the PSs, based on kernel density estimates. The grey horizontal line indicates a reference at 5 observations. The vertical lines indicate the common support, which we define as the interval on which the within-group kernel density estimates are mostly 5 or above. Here is the observed common support is (0.350, 0.993).

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