A Self-administered Version of the Functioning Assessment Short Test for Use in Population-based Studies: A Pilot Study
Open Access
- 25 September 2020
- journal article
- Published by Bentham Science Publishers Ltd. in Clinical Practice and Epidemiology in Mental Health
- Vol. 16 (1), 192-203
- https://doi.org/10.2174/1745017902016010192
Abstract
Background: The Functioning Assessment Short Test (FAST) is an interviewer-administered scale assessing functional impairment originally developed for psychiatric patients. Objectives: To adapt the FAST for the general population, we developed a self-administered version of the scale and assessed its properties in a pilot study. Methods: The original FAST scale was translated into German via forward and backward translation. Afterwards, we adjusted the scale for self-administered application and inquired participants from two ongoing studies in Germany, ‘STAAB’ (Würzburg) and ‘BiDirect’ (Münster), both recruiting subjects from the general population across a wide age range (STAAB: 30-79 years, BiDirect: 35-65 years). To assess reliability, agreement of self-assessment with proxy-assessment by partners was measured via intraclass correlation coefficient (ICC) over the FAST score. Construct validity was estimated by conducting correlations with validated scales of depression (PHQ-9), anxiety (GAD-7), and health-related quality of life (SF-12) and regression analyses using these scales besides potentially disabling comorbidities (e.g. Chronic Back Pain (CBP)). Results: Participants (n=54) had a median age of 57.0 years (quartiles: 49.8, 65.3), 46.3% were female. Reliability was moderate: ICC 0.50 (95% CI 0.46-0.54). The FAST score significantly correlated with PHQ-9, GAD-7, and the mental sub-scale of SF-12. In univariable linear regression, all three scales and chronic back pain explained variance of the FAST score. In multivariable analysis, only CBP and the SF-12 remained significant predictors. Conclusion: The German self-administered version of the FAST yielded moderate psychometric properties in this pilot study, indicating its applicability to assess functional impairment in the general population.Keywords
This publication has 36 references indexed in Scilit:
- Anxiety symptoms and disorder predict activity limitations in the elderlyJournal of Affective Disorders, 2012
- Validation of the Italian version of the Functioning Assessment Short Test (FAST) for bipolar disorderEpidemiology and Psychiatric Sciences, 2012
- Validity and Reliability of the Italian Version of the Functioning Assessment Short Test (FAST) in Bipolar DisorderClinical Practice and Epidemiology in Mental Health, 2012
- Natural History of Decline in Instrumental Activities of Daily Living Performance over the 10 Years Preceding the Clinical Diagnosis of Dementia: A Prospective Population‐Based StudyJournal of the American Geriatrics Society, 2007
- Validity and reliability of the Functioning Assessment Short Test (FAST) in bipolar disorderClinical Practice and Epidemiology in Mental Health, 2007
- Functional Disability in Elderly Nigerians: Results from the Ibadan Study of AgingJournal of the American Geriatrics Society, 2006
- A critical discussion of intraclass correlation coefficientsStatistics in Medicine, 1994
- Coefficient Kappa: Some Uses, Misuses, and AlternativesEducational and Psychological Measurement, 1981
- Assessment of Older People: Self-Maintaining and Instrumental Activities of Daily LivingThe Gerontologist, 1969
- Studies of Illness in the AgedJAMA, 1963