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Reliability and Validity of the Neuropsychiatric Inventory-Questionnaire Using a Rasch Analysis
Barbara Resnick1, Marie Boltz2, Ashley Kuzmik3
1University of Maryland School of Nursing, 655 West Lombard Street Room 390, Baltimore, MD 21201 Resnick@umaryland.edu.
Background And Purpose:
The purpose of this study was to expand on the limited psychometric testing of the NPI-Q, and extend testing to include hospitalized older adults.
Method:
This was a descriptive study using data from 318 dyads in an ongoing cluster randomized clinical trial. Rasch analysis and hypothesis testing were done.
Results:
The majority of the participants were female (62%), non-Hispanic (98%), and black (50%) with a mean age of 81.62 (SD = 8.43). There was evidence of internal consistency and invariance across race and gender. The items fit with each subscale. Hypothesis testing was supported with a significant association between the NPI-Q and dementia and caregiver distress.
Conclusions:
The NPI-Q is short, easy to complete, and reliable and valid when used with hospitalized older adults.
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