Content analysis: reliability and validity.
Lederman
R P
RP
University of Texas School of Nursing, Galveston.
D000043:Abstracting and Indexing / Q000592:standards*; D006801:Humans; D015399:Nursing Research / Q000379:methods / Q000592:standards*; D015588:Observer Variation; D015203:Reproducibility of Results; D012660:Semantics