POSB375 Validation Assessment of a Pain Interference Questionnaire Among Student Pharmacists at a United States University

Previous research assessed pain interference among student pharmacists, however, the reliability and validity of instruments used to obtain this data is unknown. This study a instrument administered pharmacists at one United States college pharmacy. The previously five-item scale (items included: how much interferes with daily activities, leisure work, school, relationships) was using classical test theory item response theory. To assess face validity, two management researchers whether items appeared measure interference. Construct Rasch analysis. Unidimensionality measured by percent raw variance explained items, mean-square infit/outfit statistics, difference between expected modeled point-biserial correlations. Scale functioning, frequency distribution, observed average sample logit Andrich separation, were assessed. Visual examination Person-Item Map determined content validity. For construct 64.2% variance. Item infit=0.7-1.3 outfit=0.72-1.16. observed=0.6. Point-biserial correlations >0.77. Two agreed that all there >10 responses per category, thresholds progressively advanced, logits advanced monotonically, logits=-2.33-1.69, separation=2.61 reliability=0.87. probability curves indicated categories minimally yet adequately distinct. Cronbach Alpha=0.93. had ceiling effect indicating gaps in instrument. has acceptable gaps. Additional should be added better capture pharmacists.