In patients with rheumatoid arthritis (RA), there is a correlation between the physician’s assessment and patient-reported impairment, suggesting that healthcare professionals are able to accurately assess the sense of impairment felt by patients with RA, according to results published in Rheumatology. In addition, patient-reported impairment levels are affected by environmental factors.
The study included participants with RA (n=100) who completed disability questionnaires, including the Disabilities of Arm, Shoulder and Hand Questionnaire, the Michigan Hand Outcomes Questionnaire, the Duruoz Hand Index, and the Arthritis Impact Measurement Scales 2. Questionnaire items were linked to International Classification of Functioning, Disability, and Health (ICF) hand core set using 3 expert opinions. The researchers evaluated participants’ impairment using the Disease Activity Score assessing 28 joints (DAS28).
After linking items to the ICF hand core set, the researchers determined that the Michigan Hand Outcomes Questionnaire covered the most body function categories in the ICF hand core set, whereas the Arthritis Impact Measurement Scales 2 was found to be the most linked scale with categories of activity/participation and environmental factors.
While impairment measured by DAS28 scores had a moderate correlation with subjective impairment (body function scores) and activity/participation on all questionnaires, subjective impairment had high and moderate correlation with activity participation.
Kabul EG, Aslan UB, Çalik BB, et al. Exploring the relation between impairment rating by DAS-28 and body function, activity participation, and environment factors based on ICF hand core set in the patient with rheumatoid arthritis [published online May 30, 2018]. Rheumatology. doi:10.1007/s00296-018-4060-y