title: You need to see the world in order to measure it: The importance of a high follow-up rate.
authors.affiliation: Alcohol Treatment Center, Department of Community Medicine and Health, Lausanne University Hospital, Lausanne, Switzerland. Nicolas.Bertholet@chuv.ch.
authors.forename: Nicolas
authors.initials: N
authors.lastname: Bertholet
authors.affiliation: National Institute for Mental Health Research, Australian National University, Canberra, Australia and Centre for Addiction and Mental Health, Toronto, Canada.
authors.forename: Bernard
authors.initials: B
authors.lastname: Burnand
authors.affiliation: Institute of Social and Preventive Medicine, Lausanne University Hospital, Lausanne, Switzerland.
authors.forename: John A
authors.initials: JA
authors.lastname: Cunningham
mesh_terms: D015982:Bias; D002986:Clinical Trials as Topic / Q000191:economics*; D005500:Follow-Up Studies; D009042:Motivation
keywords: Alcohol; brief intervention; clinical trials; follow-up rate; incentives; internet; young men