title: Increasing the precision of data analysis: planned comparisons versus omnibus tests.
authors.affiliation: School of Nursing, State University of New York, Buffalo.
authors.forename: Y W
authors.initials: YW
authors.lastname: Wu
authors.forename: M J
authors.initials: MJ
authors.lastname: Slakter
mesh_terms: D000704:Analysis of Variance; D003627:Data Interpretation, Statistical; D006801:Humans; D015399:Nursing Research / Q000379:methods* / Q000592:standards