Association between the omega-3 index in pregnancy and postpartum depression.

<p>Scatter plot of the non-linear relationship between the marine omega-3 status (omega-3 index) in pregnancy and postpartum depression score (EPDS). A rectangular hyperbolic equation (<i>y</i> = -1.31+28.1/x) was the best fit for describing this relationship (<i>ß</i> = 0.43, <i>F</i> (1,41) = 9.32, <i>p</i><0.004, n = 43). The vertical lines represent omega-3 index quartiles. Red markers represent individuals in the 25 percentile. † The content of EPA+DHA in red blood cells membranes expressed as a percent of total fatty acids ‡ Edinburgh postnatal depression scale.