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Figure 4 | Epidemiologic Perspectives & Innovations

Figure 4

From: Growth, current size and the role of the 'reversal paradox' in the foetal origins of adult disease: an illustration using vector geometry

Figure 4

Model 1 includes birth weight (bw) and current weight (cw) as covariates; Model 2 includes birth weight (bw) and weight gain (wg) as covariates. In determining the partial regression coefficients, blood pressure (bp) is projected (bp p ) onto the plane (V w ) spanned by bw, cw and wg. The point O is the origin of the vectors bp, bp p , bw, cw and wg; C and G are the intersections of the line L bw1 (running from the end of bp p parallel to bw) with vectors cw and wg. The line L bw2, crossing the tips of cw and wg, runs parallel to L bw1. From the two lines, L bw1 and L bw2 running parallel to bw, it is apparent that the absolute values of the two partial regression coefficients for current weight (CW) and weight gain (WG) are identical.

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Epidemiologic Perspectives & Innovations

ISSN: 1742-5573