Historique
Périodique
A replicable model for achieving over 90 % follow-up rates in longitudinal studies of substance abusers
(Un modèle reproductible pour des études longitudinales de suivi des usagers de drogue avec un taux de 90%)
Auteur(s) :
SCOTT, C. K.
Année
2004
Page(s) :
21-36
Langue(s) :
Anglais
Refs biblio. :
86
Domaine :
Drogues illicites / Illicit drugs
Discipline :
EPI (Epidémiologie / Epidemiology)
Note générale :
Drug and Alcohol Dependence, 2004, 74, (1), 21-36
Note de contenu :
fig. ; tabl.
Résumé :
ENGLISH :
The goals of this paper were to: (a) discuss the interface between dominant behavioral patterns of substance users and the development of a follow-up management model, (b) describe the components of the model, (c) present data regarding its effectiveness, (d) estimate the number of contacts for various follow-up rates, (e) explore the generalizability of the model across sub samples, and (f) present client outcome data that underscore the potential negative impact of low follow-up rates. The model has been used to follow-up over 12,000 research participants yielding over a 95% follow-up rate across seven studies (with over 90% completed within Q14 days of their anniversary date). Using data from two of these studies (n = 2010, n = 632), 22 contacts or less captured 70% of the participants while 33 or 38 contacts or less captured 90% in the first and second studies, respectively. When outcome variables were compared based on 70% versus 90% follow-up, the results varied by study and within study. An examination of the effect of attrition on validity in these two samples demonstrated that even the traditionally acceptable 30% level of attrition can result in significant bias and that the nature of the bias is unpredictable. (Review's abstract.)
Affiliation :
Lighthouse Inst., Chestnut Health Sys., 712 N. Wells, Chicago, IL 60610
Etats-Unis. United States.
Etats-Unis. United States.