Cognitive Function and Its Relationship with Macular Pigment Optical Density and Serum Concentrations of its Constituent Carotenoids.

Controlling for age, education level, gender, and diet, using a general linear model, these relationships with MP 0.25° remained significant or nearly significant for the majority of the tests ( p = 0.050 for FAS test, p = 0.040 for AST percent correct, p = 0.039 for PAL Total Errors, and p = 0.095 for PAL Total Errors at Stage 6) but the relationship with animal fluency was no longer significant ( p = 0.776).

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