Vitamin D, a Regulator of Androgen Levels, Is Not Correlated to PSA Serum Levels in a Cohort of the Middle Italy Region Participating to a Prostate Cancer Screening Campaign.

Indeed, the Spearman’s rank correlation computed to assess the relationship between PSA and vitamin D reported a negative correlation between the two variables, with r(2) = −0.123, p = 0.170, which did not reach statistical significance as well ( Figure 2 ). 4.

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