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Annual Study Update

The Annual Study Update (ASU) was used to ascertain cancer diagnosis. The ASU was mailed annually to participants who were alive and remained in the study. Participants were asked if they were diagnosed with cancer, the type of cancer, date of diagnosis, hospital or clinic of diagnosis and physician contact information. In addition, men were asked if they were taking Proscar or Propecia (Finasteride).

Over 1.7 million ASUs were expected for participants who were alive and remained in the study through 2009. Of those expected ASUs, 93% were completed.

Annual Study Update data and documentation are incorporated into each of the cancer datasets.

Data was collected on the following form: