We updated the design of this site on September 25th. Learn more.
Show more
ClinicalTrials.gov
ClinicalTrials.gov Menu

Bladder Cancer Case Control Study of Arsenic in Water

This study has been completed.
Sponsor:
ClinicalTrials.gov Identifier:
NCT00011518
First Posted: February 26, 2001
Last Update Posted: March 23, 2006
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by:
National Institute of Environmental Health Sciences (NIEHS)
February 22, 2001
February 26, 2001
March 23, 2006
October 1997
Not Provided
Not Provided
Not Provided
Complete list of historical versions of study NCT00011518 on ClinicalTrials.gov Archive Site
Not Provided
Not Provided
Not Provided
Not Provided
 
Bladder Cancer Case Control Study of Arsenic in Water
Not Provided
This study is examining the relationship between ingested arsenic and bladder cancer in two areas of California where a large percentage of the population was exposed to drinking water containing arsenic at low to moderate levels.
Water supplies in many parts of the world contain naturally occurring arsenic. Previous studies have shown that arsenic at high doses can cause cancer of the bladder. The risk at lower doses is unknown. This study is examining the relationship between ingested arsenic and bladder cancer in central Nevada and Kings County, California, two areas where a large percentage of the population was exposed to drinking water containing arsenic at low to moderate levels. Approximately 200 people with bladder cancer and 400 people without bladder cancer will be included. Subjects are interviewed by telephone about past residences, occupations, diet, drinking water consumption, and other lifestyle factors. Arsenic measurements in well water have been collected from the appropriate state agencies and are being matched with residences and drinking water consumption rates to estimate lifetime arsenic exposures for each subject. People with bladder cancer will then be compared to those without to see if people with cancer were more likely to have lived in areas with arsenic in their drinking water.
Observational
Observational Model: Case Control
Observational Model: Natural History
Time Perspective: Longitudinal
Time Perspective: Retrospective
Not Provided
Not Provided
Not Provided
Not Provided
Bladder Cancer
Not Provided
Not Provided
Not Provided

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Completed
600
July 2001
Not Provided

Cases must meet the following criteria:

  • Diagnosed with primary bladder cancer from January 1, 1997 until December 31, 2000.
  • Live in the following counties at the time of diagnosis: Churchill, Lyon, Mineral, Storey, Douglas, Carson City, Nevada, and Kings County, California
  • Ages 20-85 at the time of diagnosis.

Controls will be matched to cases based on gender and five year age groups.

Sexes Eligible for Study: All
20 Years to 85 Years   (Adult, Senior)
Yes
Contact information is only displayed when the study is recruiting subjects
United States
 
 
NCT00011518
7459-CP-001
Not Provided
Not Provided
Not Provided
Not Provided
National Institute of Environmental Health Sciences (NIEHS)
Not Provided
Not Provided
National Institute of Environmental Health Sciences (NIEHS)
March 2006