Two-tailed tests and a statistical significance at 0.05: what do they mean?
Campbell
Malcolm
M
School of Nursing, Midwifery & Health Visiting, University of Manchester, Coupland III Building, Oxford Road, Manchester M13 9PL, UK. malcolm.campbell@man.ac.uk
D002986:Clinical Trials as Topic / Q000592:standards*; D003625:Data Collection / Q000379:methods; D003627:Data Interpretation, Statistical; D019317:Evidence-Based Medicine / Q000592:standards; D006801:Humans; D015203:Reproducibility of Results; D012107:Research Design / Q000592:standards*