title: Single-level analysis of intervention studies with hierarchically structured data: a cautionary note.
authors.affiliation: Research Design and Statistics Unit, School of Nursing, University of Wisconsin, Madison, USA.
authors.forename: R L
authors.initials: RL
authors.lastname: Brown
authors.forename: L J
authors.initials: LJ
authors.lastname: Baumann
authors.forename: L
authors.initials: L
authors.lastname: Cameron
mesh_terms: D015982:Bias; D006801:Humans; D015233:Models, Statistical; D009010:Monte Carlo Method; D011320:Primary Health Care / Q000706:statistics & numerical data