Rasch Measurement for Reducing the Items of the Nottingham Health Profile.

摘要: The present study aimed to develop a short form of the Spanish version Nottingham Health Profile (NHP) by means Rasch analysis. Data from several studies that included NHP since 1987 were collected in common database. Forty-five different included, covering total 9,419 subjects both general population and with clinical pathologies. overall questionnaire (38 items) was simultaneously analyzed using dichotomous response model. Parameter estimates, model-data fit separation statistics computed. items additionally regrouped into two scales: Physical (19 Psychological items). Separated parameter estimates produced simultaneous item calibrations as anchor values. Misfitting deleted, resulting 22 final (NHP22)-11 11 Psychological-. evaluation hierarchies confirmed construct validity new questionnaire. To demonstrate invariance NHP22 calibrations, analyses performed separately for each sample sociodemographic health status variables. Results measure groups people categorized gender, status.