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- Dejman, Masoumeh, et al.
(författare)
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Psychometric Study Using Item Response Theory of an Instrument Developed for Assessment of Iranian Mental Health Problems
- 2022
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Ingår i: Iranian Journal of Psychiatry and Behavioral Sciences. - : Brieflands. - 1735-8639 .- 1735-9287. ; 16:3
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Tidskriftsartikel (refereegranskat)abstract
- Background: Currently, in addition to the undeniable impact of cultural factors on mental health problems’ diagnosis and treatment methods, the use of rapid, short, and intervention-based instruments can be effective in the accurate diagnosis of mental health problems, especially in the health system of developing countries.Objectives: This study aimed to validate an instrument developed for screening patients with common mental health problems using item response theory (IRT).Methods: The study was conducted in Semnan province (with Persian ethnicity), Iran, from August 2017 to February 2018. A 101-item tool consisted of district common mental health problems (i.e., depression, anxiety, and obsession), along with a functional checklist. The development of the instrument involved a pilot study and psychometric testing. The IRT-based analysis was used as the item-reduction method to evaluate the shortened tool as an appropriate screening tool. The participants were healthy individuals and patients with depression, anxiety, and obsessive-compulsive disorder (OCD). The data were analyzed using Stata software (version 15.1).Results: The study participants were 160 individuals (58.2% male) with a mean age of 36.3 ± 11.2 years. All item impact factors were within the range of 1.8-5. The mean values of clarity, simplicity, relevance, and scale-level content validity index/averaging calcu-lation method of the instrument were 96.73 ± 0.70, 97.64 ± 0.61, 98.2 ± 1.9, and 97.09 ± 0.63, respectively. Cronbach’s alpha and internal consistency coefficient were 0.88 and 0.7. Moreover, 13, 5, and 12 items were excluded using IRT from depression, anxiety, and OCD dimensions based on the threshold criteria, respectively.Conclusions: Iranian screening tools for mental health problems can provide qualified information with the least error and the most precision in appropriate early diagnosis and decrease the burden of mental health problems in the national healthcare system.
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| 3. |
- Farrahi, Hassan, et al.
(författare)
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Psychometric properties of the Persian version of the overall anxiety severity and impairment scale (OASIS)
- 2020
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Ingår i: Iranian Journal of Psychiatry and Behavioral Sciences. - : Kowsar Medical Publishing Company. - 1735-8639. ; 14:4
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Tidskriftsartikel (refereegranskat)abstract
- Objectives: This study was conducted to assess the psychometric properties of the Persian version of the overall anxiety severity and impairment scale (OASIS), a measure designed to evaluate the severity and functional impairments associated with clinical and subsyndromal anxiety.Methods: Using a descriptive-analytic framework, first, the OASIS was translated into Persian according to the forward-backward translation guidelines. Then, a total of 463 students of Guilan University of Medical Sciences in the academic year 2017 - 18 were selected using the convenience sampling method. Participants completed seven measures (i.e., OASIS, anxiety and stress subscales of depression anxiety stress scales-21, Beck anxiety inventory, openness subscale of NEO five-factor inventory, positive affect and negative affect scales, Connor-Davidson resilience scale, and state subscale of state-trait anxiety inventory), and the data were analyzed by SPSS V. 20.0 for windows and Lisrel V. 8.80.Results: Internal consistency reliability of the OASIS was acceptable (Cronbach’s α = 0.877). The exploratory factor analysis indicated that all items were loaded on a single factor (loadings = 0.799 - 0.849). The confirmatory factor analysis revealed that the single-factor model has resulted in an adequate model fit. The OASIS was positively correlated with the anxiety- and negative affect-related scales, whereas it was negatively correlated with the resilience- and positive affect-related scales. Correlations with the openness subscale were not significant.Conclusions: In line with previous studies, the findings showed that the psychometric properties of the Persian version of the OASIS are acceptable. Therefore, it seems that the measure can be used in clinical practices and research studies in Iran.
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