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. Author manuscript; available in PMC: 2011 Sep 29.
Published in final edited form as: Prostaglandins Leukot Essent Fatty Acids. 2009 Jul 19;81(2-3):179–186. doi: 10.1016/j.plefa.2009.06.005

Figure 1. Estimation of Average Requirements comparing -3 LCFA intakes to risk of inadequacy.

Figure 1

illustrates the risk curve the level of maternal n-3 LCFA intake at 32 w gestation to the risk of suboptimal verbal IQ for children at age 8 y among the ALSPAC population. The putative Estimated Average requirement is the cut point of maternal intake where the risk of inadequacy for the children is nearly equal for the group below the cut point compared to the group above the cut point. Multivatiate logistic regression models were used to adjust for potential confounding variables among the groups of mothers above and below each cut point. An adjusted odds ratio β= 1.0 would indicate a precisely 50:50 risk of inadequacy comparing the groups above and below the cut point. A dietary intake of 0.065 en% provide the best fit with an adjusted odds ratio β= 1.02.