scholarly journals Using Rasch analysis to compare the psychometric properties of the Short Form 36 physical function score and the Health Assessment Questionnaire disability index in patients with psoriatic arthritis and rheumatoid arthritis

2007 ◽  
Vol 57 (5) ◽  
pp. 723-729 ◽  
Author(s):  
William J. Taylor ◽  
Kathryn M. McPherson
Keyword(s):  
Rheumatoid Arthritis ◽  
Psoriatic Arthritis ◽  
Health Assessment Questionnaire ◽  
Rasch Analysis ◽  
Short Form ◽  
Health Assessment ◽  
Function Score ◽  
Physical Function Score ◽  
Assessment Questionnaire ◽  
Questionnaire Disability

scholarly journals Validating and Assessing the Sensitivity of the Health Assessment Questionnaire-Disability Index-derived Short Form-6D in Patients with Early Aggressive Rheumatoid Arthritis

2009 ◽  
Vol 36 (6) ◽  
pp. 1150-1157 ◽  
Author(s):  
SOGOL S. AMJADI ◽  
PAUL M. MARANIAN ◽  
HAROLD E. PAULUS ◽  
ROBERT M. KAPLAN ◽  
VEENA K. RANGANATH ◽  
...  
Keyword(s):  
Rheumatoid Arthritis ◽  
Construct Validity ◽  
Health Assessment Questionnaire ◽  
Short Form ◽  
Health Assessment ◽  
Correlation Coefficients ◽  
Patient Reported ◽  
Clinical Measures ◽  
Assessment Questionnaire ◽  
Questionnaire Disability

Objective.New methodologies allow the scores for the Health Assessment Questionnaire-Disability Index (HAQ-DI) to be translated into preferences/utility scores. We evaluated the construct validity of the HAQ-DI-derived Short Form-6D (SF-6D) score and assessed its responsiveness to change over 6- and 12-month followup periods in patients with early aggressive rheumatoid arthritis (RA).Methods.Patients (n = 277) participating in an RA observational study completed self-reported measures of symptoms and the HAQ-DI at baseline and at 6 and 12 months. Total Sharp scores, C-reactive protein, and erythrocyte sedimentation rate were assessed along with clinical data. Construct validity was assessed by examining the association between SF-6D score and patient-reported and clinical measures using Spearman correlation coefficients. The responsiveness of SF-6D to change was assessed using patient and physician assessments of the disease as clinical anchors. The magnitude of responsiveness was calculated using SF-6D effect size (ES).Result.Mean SF-6D scores were 0.690, 0.720, and 0.723 at baseline and 6 and 12-month followup, respectively. Baseline patient-reported measures had moderate to high correlations with baseline SF-6D (r = 0.43 to 0.52); whereas clinical measures had negligible to low correlations with SF-6D (r = 0.001 to 0.32). ES was moderate for the groups that were deemed to have improved (ES 0.63–0.75) but negligible to small for those that did not (ES 0.13–0.46).Conclusion.Our data support the validity and responsiveness of the HAQ-DI derived SF-6D score in an early RA cohort. These results support the use of the HAQ-DI derived SF-6D in RA cohorts and clinical trials lacking preference-based measures.

Measuring physical function in psoriatic arthritis: comparing the Multi-Dimensional Health Assessment Questionnaire to the Health Assessment Questionnaire Disability Index

2021 ◽  
pp. jrheum.200927
Author(s):  
Weiyu Ye ◽  
Simon Hackett ◽  
Claire Vandevelde ◽  
Sarah Twigg ◽  
Philip S. Helliwell ◽  
...  
Keyword(s):  
Psoriatic Arthritis ◽  
Physical Function ◽  
Health Assessment Questionnaire ◽  
Health Assessment ◽  
Clinic Visit ◽  
Retest Reliability ◽  
Floor Effects ◽  
Test Retest Reliability ◽  
Assessment Questionnaire ◽  
Questionnaire Disability

Objective To compare physical function scales of the Multi-Dimensional Health Assessment Questionnaire (MDHAQ) to the Health Assessment Questionnaire Disability Index (HAQDI) in patients with psoriatic arthritis (PsA), and examine whether either questionnaire is less prone to ‘floor effects’. Methods Data were collected prospectively from 2018 to 2019 across three UK hospitals. All patients completed physical function scales within the MDHAQ and HAQDI in a single clinic visit. Agreement was assessed using medians and the Bland-Altman method. Intraclass correlation coefficients (ICCs) were used to assess test-retest reliability. Results 210 patients completed the clinic visit; one withdrew consent thus 209 were analysed. 60.0% were male, with mean age of 51.7 years and median disease duration of 7 years. In clinic, median MDHAQ and HAQDI including/excluding aids scores were 0.30, 0.50 and 0.50 respectively. Although the median score for HAQDI is higher than MDHAQ, the difference between the two mostly lies within 1.96 standard deviations from the mean suggesting good agreement. The ICCs demonstrated excellent test-retest reliability for both HAQ questionnaires.Similar numbers of patients scored ‘0’ on the MDHAQ and HAQDI including/excluding aids (48, 47, and 49 respectively). Using a score of ≤0.5 as a cut-off for minor functional impairment, 23 patients had a MDHAQ ≤0.5 when their HAQDI including aids >0.5. Conversely, 4 patients had a MDHAQ > 0.5 when the HAQDI including aids ≤0.5. ConclusionBoth HAQ questionnaires appear to be similar in detecting floor effects in patients with PsA.

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