title: The choice of a margin of error in the calculation of an appropriate sample size in health research.
authors.forename: Fikre
authors.initials: F
authors.lastname: Enquselassie
mesh_terms: D035843:Biomedical Research / Q000706:statistics & numerical data*; D002986:Clinical Trials as Topic; D003627:Data Interpretation, Statistical; D018401:Sample Size