title: Understanding research: 2. Ensuring reliability and validity.
authors.affiliation: Guy's and St Thomas' NHS Trust, London, UK.
authors.forename: H
authors.initials: H
authors.lastname: Baxter
mesh_terms: D015982:Bias; D003627:Data Interpretation, Statistical; D015987:Effect Modifier, Epidemiologic; D032984:Ethics, Research; D006801:Humans; D015399:Nursing Research / Q000379:methods* / Q000592:standards; D018579:Patient Selection; D010865:Pilot Projects; D011897:Random Allocation; D015203:Reproducibility of Results; D012107:Research Design / Q000592:standards*; D018401:Sample Size