Association between mushroom consumption and digit span performance among middle-aged and older community-dwelling Japanese: the NILS-LSA project.

For reverse digit span scores, although the overall association was marginally significant ( p for overall trend = 0.0995), the individual spline terms remained significant, suggesting a consistent positive non-linear trend (full-adjusted spline terms β 1 = 0.974, p = 0.0352; β 2 = 2.209, p = 0.0447).

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However, these associations did not reach statistical significance in the stratified analyses (all p -values for overall trend >0.05; Table 3 ).

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