title: Questions regarding the statistical analysis.
authors.forename: Ashutosh
authors.initials: A
authors.lastname: Tamhane
mesh_terms: D002404:Catheterization; D002983:Clinical Competence; D003627:Data Interpretation, Statistical; D016099:Endoscopy, Gastrointestinal; D006801:Humans; D012107:Research Design; D013997:Time Factors