Determinants of Bladder Cancer Recurrence Study (The DETER Study)

The study questionnaires (baseline and 2 follow-ups) will capture information on how modifiable factors, including the patients' smoking habits and body weight, have changed since last contact. RSA will conduct this interview at a time convenient to the patient either during a scheduled clinic visit or by telephone.

Patients will contribute approximately 5 mL of saliva at baseline, and at the time of their follow-up questionnaires. If the patient declines to contribute a saliva specimen, they can contribute approximately 10mL of urine. Urine is routinely collected from bladder cancer patients for clinically-related tests. We will also collect urine from every participant for whom the sample is not depleted by clinical tests at the end of the day. Saliva/urine specimens will be tested for cotinine which is regarded as the gold standard to detect recent smoking exposure and is widely used to identify active smokers in epidemiologic studies.