Evaluation of daily activity questionnaire: User manual v3

This is the updated EDAQ Manualv3 (2018). The EDAQ, an explanatory leaflet for clients and support materials are available in USIR: http://usir.salford.ac.uk/view/authors/10108.html#group see under Monographs The EDAQ, EDAQ Manual and support materials are available under a Creative Commons license

The reliability and validity of the English version of the Evaluation of Daily Activity Questionnaire in people with rheumatoid arthritis

Objectives: The Evaluation of Daily Activity Questionnaire (EDAQ) includes 138 items in 14 domains identified as important by people with RA. The aim of this study was to test the validity and reliability of the English EDAQ. Methods: A total of 502 participants completed two questionnaires 3 weeks apart. The first consisted of the EDAQ, HAQ, RA Quality of Life (RAQoL) and the Medical Outcomes Scale (MOS) 36-item Short-Form Health Survey (SF-36v2), and the second consisted of the EDAQ only. The 14 EDAQ domains were tested for: unidimensionality—using confirmatory factor analysis; fit, response dependency, invariance across groups (differential item functioning)—using Rasch analysis; internal consistency [Person Separation Index (PSI)]; concurrent validity—by correlations with the HAQ, SF-36v2 and RAQoL; and test–retest reliability (Spearman’s correlations). Results: Confirmatory factor analysis of the 14 EDAQ domains indicated unidimensionality, after adjustment for local dependency in each domain. All domains achieved a root mean square error of approximation <0.10 and satisfied Rasch model expectations for local dependency. DIF by age, gender and employment status was largely absent. The PSI was consistent with individual use (PSI = 0.94 for all 14 domains). For all domains, except Caring, concurrent validity was good: HAQ (rs = 0.72–0.91), RAQoL (rs = 0.67–0.82) and SF36v2 Physical Function scale (rs = −0.60 to −0.84) and test–retest reliability was good (rs = 0.70–0.89). Conclusion: Analysis supported a 14-domain, two-component structure (Self care and Mobility) of the EDAQ, where each domain, and both components, satisfied Rasch model requirements, and have robust reliability and validity

EDAQ : DLV. Vragenlijst Evaluatie Dagelijkse Activiteit (Dutch language version of the Evaluation of Daily Activity Questionnaire)

The Dutch language version of the Evaluation of Daily Activity Questionnaire (EDAQ) is a self-report outcome measure, which people complete at home in their own time and then return to the clinician/ researcher. It has been validated for use with people with arthritis and musculoskeletal conditions in the UK, and with people with rheumatoid arthritis in the Netherlands. It can be used for clinical, audit and research purposes. It includes three parts. Part 1 consists of 10 numeric rating scales evaluating aspects of body functions (e.g. pain, fatigue, movement limitations). Part 2 consists of 14 domains assessing activity and participation abilities/ restrictions with and without the use of ergonomic approaches. Part 3 (optional) is about assistive device use. It is available in two forms: parts 1 to 3 and parts 1 and 2 only. Usually, the EDAQ parts 1 and 2 is used for most clinical and research purposes. The updated EDAQ Manual v3 (2018) explains how to use and score the EDAQ, with scoring examples (http://usir.salford.ac.uk/30752/). Rasch Transformation Tables are available in the EDAQ Manual v2 Supplement 1 and Supplement 2. An explanatory leaflet for clients is also available in USIR here under Monographs

Cross-cultural adaptation and psychometric testing of the Dutch and German versions of the Evaluation of Daily Activity Questionnaire in people with rheumatoid arthritis

The Evaluation of Daily Activity Questionnaire (EDAQ) is a detailed patient-reported outcome measure of activity ability. The objective of this research was to assess the linguistic and cross-cultural validity and psychometric properties of the EDAQ in rheumatoid arthritis for Dutch and German speakers. The EDAQ was translated into Dutch and German using standard methods. A total of 415 participants (Dutch n = 252; German n = 163) completed two questionnaires about four weeks apart. The first included the EDAQ, Health Assessment Questionnaire (HAQ) and 36-item Short-Form v2 (SF-36v2) and the second, the EDAQ only. We examined construct validity using Rasch analysis for the two components (Self-Care and Mobility) of the Dutch and German EDAQ. Language invariance was also tested from the English version. We examined internal consistency, concurrent and discriminant validity and test–retest reliability in the 14 EDAQ domains. The Self-Care and Mobility components satisfied Rasch model requirements for fit, unidimensionality and invariance by language. Internal consistency for all 14 domains was mostly good to excellent (Cronbach’s alpha ≥ 0.80). Concurrent validity was mostly strong: HAQ rs = 0.65–0.87; SF36v2 rs = − 0.61 to − 0.87. Test–retest reliability was excellent [ICC (2,1) = 0.77–0.97]. The EDAQ has good reliability and validity in both languages. The Dutch and German versions of the EDAQ can be used as a measure of daily activity in practice and research in the Netherlands and German- speaking countries

Linguistic validation and cultural adaptation of an English version of the Evaluation of Daily Activity Questionnaire in rheumatoid arthritis

Background: To linguistically validate and culturally adapt the Evaluation of Daily Activity Questionnaire (EDAQ) for use in rheumatoid arthritis (RA) from Swedish to British English. The EDAQ is a patient reported outcome measure of daily activity ability. It includes 11 activity domains (Eating and Drinking; Personal Care; Dressing; Bathing; Cooking; Moving Indoors; House Cleaning; Laundry; Moving and Transfers; Communication; Moving Outdoors) and was developed for use in rheumatoid arthritis (RA). Methods: The EDAQ was translated from Swedish to English using standard methods. Activity diaries, cognitive debriefing interviews and focus groups were completed with people with RA to: generate new culturally applicable items; identify important items in the Swedish version to retain in the English version; and develop the English EDAQ based on their views of content and layout. Content validity was established by linking the EDAQ to the International Classification of Functioning RA Core Set. Results: The English EDAQ translation was harmonised with the Swedish version to ensure equivalence of meaning. Sixty-one people with RA participated. 156 activities were identified from 31 activity diaries and included in a draft English EDAQ. Following interviews (n=20) and four focus groups, 138 activities were retained and three additional domains added (Gardening/Household Maintenance; Caring; and Leisure/ Social Activities). Most ICF RA Core Set activities are in the EDAQ. Conclusions: The English EDAQ is a detailed self-report measure of ability in RA. with good content validity

Psychometric testing of the Dutch evaluation of daily activity questionnaire in rheumatoid arthritis

Background: The Evaluation of Daily Activity Questionnaire (EDAQ) is a patient reported measure of activity limitations in Rheumatoid Arthritis (RA) and other musculoskeletal conditions, for which there is a Swedish (1) and an updated English version (2-4). The English version was translated into Dutch, and linguistically validated, with phrasing changes made following cognitive debriefing interviews with six Dutch people with RA. The Dutch EDAQ includes 138 items in 14 ‘domains’ (Eating/ Drinking; Personal Care; Dressing; Bathing; Cooking; Moving Indoors; House Cleaning; Laundry; Moving and Transfers; Moving Outdoors; Gardening/Household Maintenance; Caring; and Leisure/ Social Activities). Each domain is split into two sections: one (A) scores whether activities can be performed without aids, alternate methods or help; and another (B) which scores whether the activities can be performed with aids or alternate methods. All items are scored on a 0-3 scale (no difficulty to unable to do). Objectives: To test the reliability and validity of the Dutch version of the EDAQ in people with RA in the Netherlands. Methods: Participants from an out-patient Rheumatology clinic (Reinier de Graaf Hospital, Delft) completed postal questionnaires of demographic questions, the EDAQ, HAQ, SF36v2, RAQOL, a hand pain numeric rating scale (NRS) and a current condition severity scale. Three weeks later, the EDAQ was mailed again. Test-retest reliability of domain scores was evaluated using nonparametric correlations. Internal consistency was tested using Cronbach’s alpha. Validity of the 14 domains of the EDAQ against the other measures was assessed with non-parametric correlations. Results: 252 people participated: 155 women and 93 men; age = 65.16 (SD 13.45) years; RA duration =11.75 years (SD 9.93). 68 (27%) were employed; 20 had children <18y at home. Average pain score = 3 (IQR 1-6) and fatigue = 4 (IQR 2-7). 155 (62%) completed Test 2 and test-retest reliability of total domain scores was excellent for nine domains (rs= 0.81 -0.88) and moderate-substantial for five (rs=0.56-0.78). Internal consistency was high in all domains: Cronbach’s alpha= 0.79-0.92 for Section A. All domains of the EDAQ correlated significantly (p<0.001) with: HAQ rs= 0.51- 0.88; SF36v2 (Physical Function) rs= -0.55 to -0.87; SF36v2 Bodily Pain rs=0.44-0.67; SF36v2 (Vitality) rs= -0.35 to-0.62; RAQOL rs= 0.50-0.83; and hand pain rs=0.46-0.64. An exception was the ‘Caring’ domain as many did not have childcare responsibilities, and thus validity was lower compared to the above variables, although still significant (p<0.01; rs=0.16 to 0.31). Conclusions: The Dutch version of the EDAQ is a valid and reliable measure of daily activity in people with RA. It can be used in both clinical practice and research. References: (1) Nordenskiold et al (1998) Clin Rheumatol 17:6-16. (2) Hammond et al (2015) HQLO 12:143; (3) Hammond et al (2015) Rheumatology 54:1605-1615. (4) Hammond et al (2015) Br J Occ Ther 78:144-157. Acknowledgement: This research was funded by a EULAR Health Professionals Research Grant