The development and validation of the Unidimensional Fatigue Impact Scale (U-FIS)

2009 ◽  
Vol 15 (10) ◽  
pp. 1228-1238 ◽  
Author(s):  
DM Meads ◽  
LC Doward ◽  
SP McKenna ◽  
J. Fisk ◽  
J. Twiss ◽  
...  
Keyword(s):  
Rasch Analysis ◽  
Nottingham Health Profile ◽  
Reliability And Validity ◽  
Patient Interviews ◽  
Impact Scale ◽  
Significant Difference ◽  
Model Reliability ◽  
Fatigue Impact Scale ◽  
Development And Validation ◽  
Unidimensional Scale

Background: The multidimensional assessment of fatigue is complicated by the interrelation of its multiple causes and effects. Objective: The purpose of the research was to develop a unidimensional assessment of fatigue (U-FIS). Methods: Data collected with the Fatigue Impact Scale (FIS) were subjected to Rasch analysis to identify potential problems with the scale. Additional items for the U-FIS were generated from interviews with UK MS patients. The U-FIS was tested for face and content validity in patient interviews and included in a validation survey to determine dimensionality (Rasch model), reliability and validity. Results: The original FIS was not unidimensional when subscale items were combined. The modification of the FIS and addition of a number of items allowed the development of a 22-item unidimensional scale (U-FIS) that was reliable (Cronbach Alpha = 0.96; test-retest = 0.86,) and valid given correlations with the Nottingham Health Profile and ability to distinguish between MS severity groups. There was no significant difference in U-FIS scores according to MS type. Conclusion: It is valid to conceptualize the functional impact of fatigue as unidimensional. The U-FIS is a reliable and valid questionnaire that will allow the measurement of this construct in clinical studies.

Rasch analysis of the Modified Fatigue Impact Scale (MFIS) in multiple sclerosis

2010 ◽  
Vol 81 (9) ◽  
pp. 1049-1051 ◽  
Author(s):  
R. J. Mills ◽  
C. A. Young ◽  
J. F. Pallant ◽  
A. Tennant
Keyword(s):  
Multiple Sclerosis ◽  
Rasch Analysis ◽  
Impact Scale ◽  
Fatigue Impact Scale

scholarly journals PMC17 RASCH ANALYSIS OF THE FATIGUE IMPACT SCALE

2005 ◽  
Vol 8 (6) ◽  
pp. A70
Author(s):  
DM Meads ◽  
NE Hampson ◽  
JD Fisk ◽  
SP McKenna ◽  
LC Doward ◽  
...  
Keyword(s):  
Rasch Analysis ◽  
Impact Scale ◽  
Fatigue Impact Scale

scholarly journals Quality of life and self-stigma of schizophrenia patient’s caregiver tool: Development and validation using classical test theory and Rasch analysis

2021 ◽  
Vol 27 ◽  
Author(s):  
Zainab Albikawi ◽  
Mohammad Abuadas
Keyword(s):  
Quality Of Life ◽  
Rasch Analysis ◽  
Classical Test Theory ◽  
Reliability And Validity ◽  
Test Theory ◽  
Cross Sectional ◽  
Classical Test ◽  
Cross Sectional Design ◽  
Development And Validation

Background: Providing care for schizophrenia patients is complex, and it requires dealing with various psychosocial burdens.Aim: To develop and validate a tool that measures the quality of life and self-stigma (SS) of the schizophrenia patient’s caregiver (QLSSoSPC).Setting: Outpatient psychiatric services clinics in Saudi Arabia.Methods: The current study used a methodological cross-sectional design. A sample of 205 schizophrenia patients’ caregivers was recruited by using a convenient sampling method. Classical Test Theory and Rasch Analysis approaches were used.Results: The developed tool has proven acceptable level of reliability and validity. The analysis confirmed seven-factor structure accounted for 74.4% of the total variance. Cronbach’s reliability statistics for the developed tool were satisfactory and ranged from 0.80 to 0.91.Conclusion: The psychometric properties of the QLSSoSPC tool supported its prospective use and allowing us to recommend the implementation of the tool on behalf of clinical and research purposes.

scholarly journals Rasch Analysis Model: Reliability and Validity of Superitem Test Instrument

2020 ◽  
Vol 9 (4) ◽  
Author(s):  
Mohd Faizul Ridzuan ◽  
Hooi Lian Lim ◽  
Farah Atiqah Ahmad Fozee ◽  
Siti Nur Anissa Mohd Nasser
Keyword(s):  
Rasch Analysis ◽  
Reliability And Validity ◽  
Analysis Model ◽  
Test Instrument ◽  
Model Reliability

scholarly journals Psychometric Properties of the Modified Fatigue Impact Scale

2013 ◽  
Vol 15 (1) ◽  
pp. 15-20 ◽  
Author(s):  
Rebecca D. Larson
Keyword(s):  
Psychometric Properties ◽  
Reliability And Validity ◽  
Target Population ◽  
Self Report ◽  
Future Research ◽  
Validity Data ◽  
Report Quality ◽  
Impact Scale ◽  
Fatigue Impact Scale ◽  
The Impact

Psychometric assessments are tests or questionnaires that have been designed to measure constructs of interest in an individual or a target population. A goal of many of these self-report instruments is to provide researchers with the ability to gather subjective information in a manner that might allow for quantitative analysis and interpretation of these results. This requires the instrument of choice to have adequate psychometric properties of reliability and validity. Much research has been conducted on creating self-report quality of life questionnaires for individuals with multiple sclerosis (MS). This article focuses on one in particular, the Modified Fatigue Impact Scale (MFIS). The article starts with a brief description of the rationale, construction, and scoring of the inventory. Next, the best available reliability and validity data on the MFIS are presented. The article concludes with a brief discussion on the interpretation of scores, followed by suggestions for future research. This summative analysis is intended to examine whether the instrument is adequately measuring the impact of fatigue and whether the scores allow for meaningful interpretations.

scholarly journals Validation of Fatigue Impact Scale with various item sets – a Rasch analysis

2017 ◽  
Vol 41 (7) ◽  
pp. 840-846 ◽  
Author(s):  
Åsa Lundgren-Nilsson ◽  
Alan Tennant ◽  
Sofie Jakobsson ◽  
Magnus Simrén ◽  
Charles Taft ◽  
...  
Keyword(s):  
Rasch Analysis ◽  
Impact Scale ◽  
Fatigue Impact Scale
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