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Figure 3 | Emerging Themes in Epidemiology

Figure 3

From: Simpson's Paradox, Lord's Paradox, and Suppression Effects are the same phenomenon – the reversal paradox

Figure 3

A 3-dimensional scatter plot for the numerical example in Lord's paradox. The solid line shows that the mean blood pressure of subjects with higher birth weight (BWb = 1) is greater than those with lower birth weight (BWb = 0). However, at each level of current weight, the mean blood pressure of subjects with higher birth weight is lower than those with lower birth weight (the horizontal red lines).

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