title: Validity: controlling for variables in research studies involving high-risk neonates.
authors.forename: K A
authors.initials: KA
authors.lastname: Thomas
mesh_terms: D015982:Bias; D006801:Humans; D007231:Infant, Newborn; D017283:Neonatal Nursing / Q000592:standards*; D015399:Nursing Research / Q000592:standards*; D012044:Regression Analysis; D015203:Reproducibility of Results