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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 2. Delivery Mode (Cesarean Section vs. Vaginal Delivery): PS Kernel Density Estimates and Common Support.

Figure 2

The solid (C-section) and dotted (vaginal birth) 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 the observed common support is (0.095, 0.530).

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