Measure of activity performance of the hand (MAP-Hand) questionnaire: linguistic validation, cultural adaptation and psychometric testing in people with rheumatoid arthritis in the UK Yeliz Prior Alison Hammond 10.17866/rd.salford.7637579.v1 https://salford.figshare.com/articles/journal_contribution/Measure_of_activity_performance_of_the_hand_MAP-Hand_questionnaire_linguistic_validation_cultural_adaptation_and_psychometric_testing_in_people_with_rheumatoid_arthritis_in_the_UK/7637579 <p>Abstract</p><p>Background: Developed in the Norway, the Measure of Activity Performance of the Hand (MAP-Hand) assesses 18</p><p>activities performed using the hands. It was developed for people with rheumatoid arthritis (RA) using patient</p><p>generated items, which are scored on a 0–3 scale and summarised into a total score range (0 to 54). This study</p><p>reports the development and psychometric testing of the British English MAP-Hand in a UK population of people</p><p>with RA.</p><p>Methods: Recruitment took place in the National Health Service (NHS) through 17 Rheumatology outpatient clinics.</p><p>Phase 1 (cross-cultural adaptation) involved: forward translation to British English; synthesis; expert panel review and</p><p>cognitive debriefing interviews with people with RA. Phase 2 (psychometric testing) involved postal completion of</p><p>the MAP-Hand, Health Assessment Questionnaire (HAQ), Upper Limb HAQ (ULHAQ), Short-Form 36 (SF-36v2) and</p><p>Disabilities of the Arm Shoulder Hand (DASH) to measure internal consistency (Cronbach’s alpha); concurrent</p><p>validity (Spearman’s correlations) and Minimal Detectable Difference (MDC95). The MAP-Hand was repeated threeweeks</p><p>later to assess test-retest reliability (linear weighted kappa and Intra-Class Correlations (ICC (2,1)).</p><p>Unidimensionality (internal construct validity) was assessed using (i) Confirmatory Factor Analysis (CFA) (ii) Mokken</p><p>scaling and (iii) Rasch model. The RUMM2030 software was used, applying the Rasch partial credit model.</p><p>Results: In Phase 1, 31 participants considered all items relevant. In Phase 2, 340 people completed Test-1 and 273</p><p>(80%) completed Test-2 questionnaires. Internal consistency was excellent (α = 0.96). Test-retest reliability was good</p><p>(ICC (2,1) = 0.96 (95% CI 0.94, 0.97)). The MAP-Hand correlated strongly with HAQ20 (rs = .88), ULHAQ (rs = .91), SF-</p><p>36v2 Physical Functioning (PF) Score (rs = −.80) and DASH (rs = .93), indicating strong concurrent validity. CFA failed</p><p>to support unidimensionality (Chi-Square 236.0 (df 120; p < 0.001)). However, Mokken scaling suggested a</p><p>probabilistic ordering. There was differential item functioning (DIF) for gender. Four testlets were formed, resulting</p><p>in much improved fit and unidimensionality. Following this, testlets were further merged in pairs where opposite</p><p>bias existed. This resulted in perfect fit to the model.</p><p>Conclusions: The British English version of the MAP-Hand has good validity and reliability in people with RA and</p><p>can be used in both research and clinical practice.</p><p>Keywords: PROMS, Patient reported outcome measures, Hand activity performance, Hand function, Hand pain,</p><p>Psychometric testing, Rasch analysis, Validity, Reliability</p> 2020-06-25 08:40:04 patient reported outcome measure psychometric tests Rheumatology and Arthritis