126
Participants
Start Date
November 30, 2005
Primary Completion Date
August 31, 2008
Study Completion Date
February 28, 2009
Motivational Interviewing
Two sessions of Motivational Interviewing (after baseline assessment and 4 weeks later) plus one individualized feedback based on the Transtheoretical Model of Behavior Change (8 weeks after baseline assessment)
Federal Ministry of Health, Germany
OTHER_GOV
University of Luebeck
OTHER