title: Issues in classification in meta-analysis in substance abuse prevention research.
authors.affiliation: Bowman Gray School of Medicine, Winston-Salem, NC 27157-1068, USA.
authors.forename: W B
authors.initials: WB
authors.lastname: Hansen
authors.forename: L A
authors.initials: LA
authors.lastname: Rose
mesh_terms: D000704:Analysis of Variance; D006801:Humans; D015201:Meta-Analysis as Topic; D008962:Models, Theoretical; D012106:Research / Q000706:statistics & numerical data*; D012107:Research Design; D013223:Statistics as Topic / Q000145:classification*; D018709:Statistics, Nonparametric; D019966:Substance-Related Disorders / Q000517:prevention & control*