title: Can the results be explained by poor randomization and nonpertinent comparisons?
authors.forename: S
authors.initials: S
authors.lastname: Blomberg
authors.forename: S E
authors.initials: SE
authors.lastname: Ricksten
authors.forename: K
authors.initials: K
authors.lastname: Olausson
authors.forename: H
authors.initials: H
authors.lastname: Magnusdottir
authors.forename: L
authors.initials: L
authors.lastname: Lurje
authors.forename: B
authors.initials: B
authors.lastname: Wennerblom
authors.forename: H
authors.initials: H
authors.lastname: Emanuelsson
mesh_terms: D000767:Anesthesia, Epidural; D000789:Angina, Unstable / Q000628:therapy*; D003627:Data Interpretation, Statistical; D006801:Humans; D016032:Randomized Controlled Trials as Topic; D018709:Statistics, Nonparametric