Mohammad Zare, Zahra Tagharrobi, Khadijeh Sharifi, Zahra Sooki, Javad Abolhasani,
Volume 17, Issue 2 (Vol 17,No.2, Summer 2021 2021)
Abstract
Background and Objectives: Valid, reliable, short, sensitive and accurate tool is needed to diagnose pain in dementia patients. This study aimed to determine the psychometric properties and diagnostic accuracy of short-form Persian version of Doloplus-2 (P-Doloshort) in pain assessment in elderly with dementia.
Methods: In this cross-sectional study, 100 elderly were selected using convenient sampling from private clinics and nursing homes in Kashan in 2018-19. Construct validity was determined by exploratory factor analysis, known-groups approach and convergent validity. Also, reliability was evaluated by internal consistency, equivalence, and stability. P-Doloplus-2 and P-Doloshort were used as the reference standard and the index test, respectively. Data were analyzed by SPSS-v16 using independent T-Test, linear regression, Pearson and intra-class correlation coefficients (ICC), Cronbach's alpha, ROC curve, and diagnostic test parameters.
Results: Factor analysis identified the tool as a single-factor; it was able to explain 65.851% of total variance. P-Doloshort was able to differentiate between two groups with and without painful underlying diseases (P<0.0001). There was a positive and significant correlation between P-Doloshort score with P-Doloplus-2 score (r=0.975, P<0.0001) and PACSLAC-II-IR score (r=0.0001, P<0.0001). Cronbach's alpha, ICC and standard error of measurement were 0.898, 0.891 and ±1.183, respectively. The relative frequency of minimum and maximum possible score was less than 15%. At the cut-off point of 2.5, area under ROC curve, sensitivity, specificity, and overall diagnostic accuracy were estimated 0.985, 0.956, 1.000 and 0.970, respectively.
Conclusion: P-Doloshort can be used as a valid, reliable, sensitive and accurate tool for pain assessment in elderly with dementia.
