Site: Colorectal

Inclusion Criteria:

• No Rare Cancers
• No History of Any Cancer Prior to Randomization
• No History of Colon Disease
• Pre-Diagnostic Specimen Available (1+ months)

Matching Factors:

• Gender
• Race (W/B/O)
• Age at Entry (+/- 1 year)
• Date of Blood Draw (+/- 30 days)

Match Ratio: 1 to 1

Match Technique: Individual matching only non-cases as controls.

Additional Matching Comments: one subject had an expanded date of blood draw range (+/- 60 days)

Analytes:

• 25-Hydroxyvitamin D
• Vitamin D Binding Protein

Number of Cases: 476

Number of Controls: 476

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