title: Designing clinical research studies: Part III.
authors.affiliation: Oregon Health and Sciences University, School of Nursing, Portland, OR, USA.
authors.forename: Joyce
authors.initials: J
authors.lastname: Colling
mesh_terms: D015400:Clinical Nursing Research / Q000379:methods*; D003625:Data Collection / Q000379:methods; D003627:Data Interpretation, Statistical; D006801:Humans; D012107:Research Design