600
Participants
Start Date
March 31, 2006
Primary Completion Date
April 30, 2010
Study Completion Date
April 30, 2010
Telephone counseling + interactive website = more abstinence
Behavioral: interactive website
Kaiser Permanente Center for Health Research, Portland
Oregon Research Institute, Eugene
Free & Clear, Inc., Seattle
National Cancer Institute (NCI)
NIH
Kaiser Permanente
OTHER