Effects of omega-3 polyunsaturated fatty acid supplementation on cognitive functioning in youth at ultra-high risk for psychosis: secondary analysis of the NEURAPRO randomised controlled trial.

The time×group interaction remained marginally significant with the inclusion of the covariate ( F (1, 215) = 4.02, P = 0.046, η p 2 = 0.02).

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32 However, given the theoretical basis of previous literature and the small effect size and marginal significance of this result, it is likely that the benefit of the placebo is attributable to chance.

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