Site: Prostate

Inclusion Criteria:

• Incident Cases/Controls in BPC3/CGEMS
• T0 Serum or BPC3 Aliquot
• Zinc-Free Serum or BPC3 Aliquot

Matching Factors:

• BPC3/CGEMS Cell

Match Ratio: 1 to 1

Match Technique: other, specify

Additional Matching Comments: The match for this study was retained from the original CGEMS/BPC3 studies.

Analytes:

• 1,25-dihydroxyvitamin D3
• 25-Hydroxyvitamin D

Number of Cases: 749

Number of Controls: 730

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