title: Statistics in experimental cerebrovascular research-comparison of two groups with a continuous outcome variable.
abstract: Part one of this mini-series on statistics in cerebrovascular research uses the simplest yet most common comparison in experimental research (two groups with a continuous outcome variable) to introduce the very basic concepts of statistical testing: a priori formulation of hypotheses and definition of planned statistical analysis, error considerations, and power analysis.
authors.affiliation: Department of Biostatistics and Clinical Epidemiology, Charité University Medicine, Berlin 10098, Germany.
authors.forename: Peter
authors.initials: P
authors.lastname: Schlattmann
authors.forename: Ulrich
authors.initials: U
authors.lastname: Dirnagl
mesh_terms: D002560:Cerebrovascular Circulation / Q000502:physiology*; D003626:Data Display; D003627:Data Interpretation, Statistical; D006801:Humans; D012107:Research Design; D018401:Sample Size; D016896:Treatment Outcome