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Conducting Clinical Trials

  • Updated: 09/04/2003

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SELECT Data: Enrollment Statistics

SELECT, the largest-ever prostate cancer prevention trial, is testing selenium and vitamin E (alone or in combination) to see if these supplements may prevent prostate cancer. SELECT began enrolling patients on August 21, 2001, and hopes to enroll 32,400 men over a five-year period.

There are 435 SELECT sites throughout the United States, Puerto Rico, and Canada.

Recruitment snapshot

In the first two years of recruitment (August 21, 2001, to August 20, 2003):

  • 24,639 men have been enrolled, or 76 percent of the total enrollment goal.
  • Of these, 3,526 are African Americans, comprising 14 percent of the enrolled total

The median age of SELECT participants is 62. The oldest participant enrolled at the age of 93.

A diverse group of men have joined SELECT. As of August 20, 2003:

  • 79 percent are white.
  • 13 percent are African-American.
  • 5 percent are Hispanic (non-African-American).
  • 1 percent are Hispanic (African-American).
  • 1 percent are Asian/Pacific Islander.

Incidence of prostate cancer

  • In men, prostate cancer is the most common cancer after skin cancer.
  • Prostate cancer is the second highest cause of cancer death in men in the U.S.
  • African-American men in the U.S. have the highest prostate cancer rates in the world.

To get more information...

...or to locate a participating center, call 1-800-4-CANCER in the United States and Puerto Rico or 1-888-939-3333 in Canada. For a collection of material about SELECT, visit Digest Page: The SELECT Prostate Cancer Prevention Trial.

SELECT Enrollment by U.S. State & Puerto Rico as of Aug. 2003
U.S. StateNumberU.S. StateNumber
Alabama124Montana31
Alaska8Nebraska257
Arizona475Nevada166
Arkansas17New Hampshire6
California2,259New Jersey235
Colorado655New Mexico8
Connecticut97New York868
Delaware56North Carolina418
District of Columbia516North Dakota256
Florida625Ohio805
Georgia258Oklahoma355
Hawaii25Oregon278
Idaho140Pennsylvania864
Illinois1,493Puerto Rico948
Indiana291Rhode Island25
Iowa493South Carolina853
Kansas333South Dakota59
Kentucky328Tennessee357
Louisiana247Texas1,364
Maine6Utah250
Maryland108Vermont43
Massachusetts220Virginia234
Michigan937Washington1,122
Minnesota870West Virginia184
Mississippi587Wisconsin425
Missouri478  

SELECT Enrollment by Canadian Province as of Aug. 2003
Canadian ProvinceNumberCanadian ProvinceNumber
Alberta57Ontario1,065
British Columbia725Québec702
Nova Scotia33  

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