Validity and Reliability of the Persian Version of the Functioning Assessment Short Test in Outpatients With Bipolar Disorder

Ranaeiy, Samira; Rahimi Taghanaki, Changiz; Mohammadi, Nurallah; Dastgheib, Seyed Ali

Volume 12 - Articles-1401 MEJDS (2022) 12: 213 | Back to browse issues page

Ethics code: IR.SUMS.REC.1398.1188

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Ranaeiy S, Rahimi Taghanaki C, Mohammadi N, Dastgheib S A. Validity and Reliability of the Persian Version of the Functioning Assessment Short Test in Outpatients With Bipolar Disorder. MEJDS 2022; 12 :213-213
URL: http://jdisabilstud.org/article-1-2423-en.html

Validity and Reliability of the Persian Version of the Functioning Assessment Short Test in Outpatients With Bipolar Disorder

Samira Ranaeiy¹

, Changiz Rahimi Taghanaki ^*²

, Nurallah Mohammadi³

, Seyed Ali Dastgheib⁴

1- PhD Candidate of Clinical Psychology, Department of Clinical Psychology, Shiraz University, Shiraz, Iran
2- Professor of Clinical Psychology, Department of Clinical Psychology, Shiraz University, Shiraz, Iran
3- Professor of Psychology, Department of Clinical Psychology, Shiraz University, Shiraz, Iran
4- Assistant Professor of Psychiatry, Substance Abuse Research Center, Shiraz University of Medical Sciences, Shiraz, Iran

Abstract: (983 Views)

Abstract
Background & Objectives: Some people with bipolar disorder regain psychosocial functioning upon symptomatic remission. The majority still suffer persistent functional difficulties, even though their core affective symptoms are controlled. Functional recovery is considered as important as symptomatic recovery, and assessing functional outcomes is increasingly recommended in clinical and research settings. Therefore, it seems quite necessary to make instruments with acceptable validity and reliability in different languages. A variety of measures are applied to evaluate functional impairments in bipolar disorder studies, but none of them are specifically designed for bipolar disorder. This instrument was developed for clinical evaluation of functional impairments presented by patients suffering from mental disorders (especially bipolar disorder). Functioning Assessment Short Test (FAST) is a brief instrument designed to assess the main functioning problems experienced by psychiatric patients, specifically bipolar patients. Here in this research we examined the psychometric properties of the Persian version of FAST.
Methods: This questionnaire development study was conducted in the Psychiatric Department of Imam–Reza Clinic, Shiraz City, Iran. Outpatients diagnosed with bipolar disorder type I and II (n=202) were recruited using convenience sampling. A psychiatrist diagnosed bipolar disorder according to the Diagnostic and Statistical Manual of Mental Disorders (DSM–5). All available information, including psychiatric records, was brought into consideration. Subjects diagnosed with borderline personality disorder, those in the acute phase of bipolar disorder, active drug abusers, and patients with comorbid mental retardation were excluded. The control group consisted of healthy subjects (n=202) recruited using convenience sampling and screened to have no first–degree relatives with bipolar disorder, current psychiatric comorbidity, schizophrenia, or other psychotic disorders. The control group was compared with the patient group regarding sex, age, marital status, and educational level. Based on the results of the Hamilton Depression Rating Scale and the Young Mania Rating Scale scores, patients were classified as euthymic (those with scores < 8) and symptomatic (those with scores ≥ 8). Bipolar disorder patients and the control group were assessed with FAST. The instrument was evaluated regarding face, construct, convergent, discriminant and concurrent validity. The Cronbach alpha and intra–class correlation coefficients were calculated to estimate internal consistency and test–retest reliability, respectively. Data were analyzed using SPSS 23 and Lisrel 22 at a significance level of 0.05.
Results: The control group and patients group had no significant differences regarding sex, age, marital status, and educational level (p>0.05). Face validity for all questions was acceptable with impact scores ≥ 4.9. FAST total scores were higher for the patient group (22.36±14.21) compared to the control group (4.49±2.03; p<0.001). Furthermore, FAST total scores showed a significant difference between the symptomatic and euthymic groups. FAST scores were lower for the euthymic group (13.80±9.06) compared to the symptomatic group (34.89±10.62; p<0.001). The FAST could successfully discriminate between patients and controls as well as euthymic and symptomatic patients. Confirmatory factor analysis also confirmed the selected model (X2/df=5.04; RMSEA=0.101; NFI=0.96; CFI=0.97; IFI=0.97; GFI=0.80). The FAST also showed acceptable convergent and discriminant validity. The findings showed that the scaling success rates for convergent and discriminant validity were 100% for all domains. Total FAST scores were strongly and negatively correlated with the Global Assessment of Functioning scores (rho= –0.9, p<0.001); therefore, FAST showed an acceptable concurrent validity. The Cronbach alpha coefficient and intra–class correlation coefficient in the Persian version of the FAST were above 0.7.
Conclusion: Based on the findings of this study, the Persian version of FAST has sufficient validity and reliability, making it an acceptable assessment for application in clinical trials and comparative studies.

Keywords: Bipolar disorder, Validity, Reliability, Functional impairment

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Type of Study: Original Research Article | Subject: Psychology

References

1. Whiteford HA, Degenhardt L, Rehm J, Baxter AJ, Ferrari AJ, Erskine HE, et al. Global burden of disease attributable to mental and substance use disorders: findings from the Global Burden of Disease Study 2010. Lancet. 2013;382(9904):1575–86. [DOI]

2. Huxley N, Baldessarini RJ. Disability and its treatment in bipolar disorder patients. Bipolar Disord. 2007;9(1–2):183–96. [DOI]

3. Vieta E, Rosa AR. Evolving trends in the long-term treatment of bipolar disorder. World J Biol Psychiatry. 2007;8(1):4–11. [DOI]

4. American Psychiatric Association. Diagnostic and statistical manual of mental disorders: DSM-IV-TR. 4th ed. Washington, DC: American Psychiatric Association; 2000.

5. Weissman MM, Bothwell S. Assessment of social adjustment by patient self-report. Arch Gen Psychiatry. 1976;33(9):1111–5. [DOI]

6. Ware J, MA K, Keller SD. SF–36 physical and mental health summary scales: a user’s manual. Boston: New England Medical Center Pub; 1993.

7. Hays RD, Morales LS. The RAND-36 measure of health-related quality of life. Ann Med. 2001;33(5):350–7. [DOI]

8. Goldman HH, Skodol AE, Lave TR. Revising axis V for DSM-IV: a review of measures of social functioning. Am J Psychiatry. 1992;149(9):1148–56. [DOI]

9. Rosa AR, Sánchez-Moreno J, Martínez-Aran A, Salamero M, Torrent C, Reinares M, et al. Validity and reliability of the Functioning Assessment Short Test (FAST) in bipolar disorder. Clin Pract Epidemiol Ment Health. 2007;3:5. [DOI]

10. Madera J, Such P, Zhang P, Baker RA, Grande I. Use of the Functioning Assessment Short Test (FAST) in defining functional recovery in bipolar I disorder. Post-hoc analyses of long-term studies of aripiprazole once monthly as maintenance treatment. Neuropsychiatr Dis Treat. 2019;15:2325–38. [DOI]

11. Aydemir O, Uykur B. Reliability and validity study of the Turkish version of functioning assessment short test in bipolar disorder. Turk Psikiyatri Derg. 2012;23(3):193–200. [Turkish]

12. Moro MF, Colom F, Floris F, Pintus E, Pintus M, Contini F, et al. Validity and reliability of the Italian version of the Functioning Assessment Short Test (FAST) in bipolar disorder. Clin Pract Epidemiol Ment Health. 2012;8:67–73. [DOI]

13. Barbato A, Bossini L, Calugi S, D’Avanzo B, Fagiolini A, Koukouna D, et al. Validation of the Italian version of the Functioning Assessment Short Test (FAST) for bipolar disorder. Epidemiol Psychiatr Sci. 2013;22(2):187–94. [DOI]

14. Rotger S, Richarte V, Nogueira M, Corrales M, Bosch R, Vidal R, et al. Functioning Assessment Short Test (FAST): validity and reliability in adults with attention–deficit/hyperactivity disorder. Eur Arch Psychiatry Clin Neurosci. 2014;264(8):719–27. [DOI]

15. González-Ortega I, Rosa A, Alberich S, Barbeito S, Vega P, Echeburúa E, et al. Validation and use of the functioning assessment short test in first psychotic episodes. J Nerv Ment Dis. 2010;198(11):836–40. [DOI]

16. Brislin RW. The wording and translation of research instruments. In: Lonner WJ, Berry JW. Field methods in cross-cultural research. Thousand Oaks, CA, US: Sage Publications, Inc; 1986. pp: 137–64.

17. Marsh HW, Hau KT, Balla JR, Grayson D. Is more ever too much? The number of indicators per factor in confirmatory factor analysis. Multivariate Behav Res. 1998;33(2):181–220. [DOI]

18. Comrey AL, Lee HB. A first course in factor analysis. 2nd ed. New York, US: Psychology Press; 1992.

19. Beaton DE, Bombardier C, Guillemin F, Ferraz MB. Guidelines for the process of cross-cultural adaptation of self-report measures. Spine. 2000;25(24):3186–91. [DOI]

20. Habibi A, Adanvar M. Structural equation modeling and factor analysis (LISREL manual). Tehran, Iran: Academic Center for Education, Culture, and Research Press; 2017.

21. MacCallum RC, Browne MW, Sugawara HM, Wegener D. Power analysis and determination of sample size for covariance structure modeling. Psychological Methods. 1996;1(2):130–49. [DOI]

22. Bentler PM, Bonett DG. Significance tests and goodness of fit in the analysis of covariance structures. Psychological Bulletin. 1980;88:588–606. [DOI]

23. Etezadi-Amoli J, Farhoomand AF. A structural model of end user computing satisfaction and user performance. Information & Management. 1996;30(2):65–73. [DOI]

24. Fayers PM, Machin D. Quality of life. 2nd ed. Chichester, UK: John Wiley & Sons, Ltd; 2007. [DOI]

25. Jafari P, Ghanizadeh A, Akhondzadeh S, Mohammadi MR. Health-related quality of life of Iranian children with attention deficit/hyperactivity disorder. Qual Life Res. 2011;20(1):31–6. [DOI]

26. Jafari P, Forouzandeh E, Bagheri Z, Karamizadeh Z, Shalileh K. Health related quality of life of Iranian children with type 1 diabetes: reliability and validity of the Persian version of the PedsQLTM Generic Core Scales and Diabetes Module. Health Qual Life Outcomes. 2011;9:104. [DOI]

27. Nunnally JC. Psychometric theory. 3rd ed. New York: McGraw-Hill; 1994.

28. Qin S, Nelson L, McLeod L, Eremenco S, Coons SJ. Assessing test-retest reliability of patient-reported outcome measures using intraclass correlation coefficients: Recommendations for selecting and documenting the analytical formula. Qual Life Res. 2019;28(4):1029–33. [DOI]

29. Fleiss JL. The design and analysis of clinical experiments: Fleiss/the design. Hoboken, NJ, USA: John Wiley & Sons, Inc.; 1999. [DOI]

30. Suominen K, Salminen E, Lähteenmäki S, Tupala T, Isometsä E. Validity and reliability of the Finnish version of the Functioning Assessment Short Test (FAST) in bipolar disorder. Int J Bipolar Disord. 2015;3:10. [DOI]

31. First MB, Williams JBW, Karg RS, Spitzer RL. User’s guide for the SCID-5-CV structured clinical interview for DSM-5® disorders: Clinical version. Arlington, VA, US: American Psychiatric Publishing, Inc.; 2016.