Learning Objective 1: Understand how Construct Modeling is used to identify the dimensions of a construct under study and therefore, a guide for instrument development.
Learning Objective 2: Synthesize how Rash Model diagnostics are used to evaluate the effectiveness of instruments developed for measurement.
Methods: A final version of the survey was distributed to RN’s who volunteered to participate. IRB approval was obtained.
Results: The population used for this study were RN’s currently working at the regional hospital. A research day was used as a convenient way to reach many nurses allowing them the opportunity to voluntarily participate in the research.
This study used Rasch Model diagnostics and analysis to evaluate an instrument that measured nursing staff perceptions of communication between nurses and doctors. Rasch analysis allowed a more appropriate analysis of the data and provided detailed information about the psychometric properties of the instrument. Tool diagnostics were performed as follows: category frequencies and average measures, as well as, threshold estimates, probability curves, and category fit statistics. Validity was articulated within the context of the Rasch model. Person and item reliability indexes were clarified in relation to defining reliability of the instrument and interpretation of the data.
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