Cultural adaptation and validation of the Persian version of the Disabilities of the Arm, Shoulder and Hand (DASH) outcome measure.
OBJECTIVE
To translate and validate the Persian version of the Disabilities of the Arm, Shoulder and Hand (DASH) outcome measure (Persian DASH).


METHODS
Cultural translation and psychometric testing.


METHODS
Outpatient departments of orthopaedics surgery, primary care settings, rehabilitation medicine and physical therapy.


METHODS
Two hundred and seventy-one consecutive Persian-speaking patients with upper extremity disorders including subacromial impingement syndrome, rotator cuff disease, epicondylitis, ulnar nerve entrapment, bursitis, instability, carpal tunnel syndrome, tenosynovitis and adhesive capsulitis.


METHODS
The translation and cultural adaptation of the original questionnaire was carried out in accordance with published guidelines. The participants were asked to complete a questionnaire booklet including the Persian DASH, the Short Form General Health Survey (SF-36) and a visual analogue scale (VAS) of pain. In addition, 31 randomly selected patients were asked to complete the questionnaire 48 hours later for the second time.


RESULTS
Cronbach's alpha coefficient for the Persian DASH was 0.96. The Persian DASH showed excellent test-retest reliability with intraclass correlation coefficient equal to 0.82 (P<0.01). The correlation between the Persian DASH and the functional scales of the Iranian SF-36 showed desirable results indicating a good convergent validity (Pearson's coefficients ranged from -0.25 to -0.72; P<0.001). The correlation between the Persian DASH and the visual analogue scale was 0.52 (P<0.01).


CONCLUSIONS
The Persian DASH is a reliable and valid instrument to measure functional status in Persian-speaking patients with upper extremity disorders in Iran. It is simple and easy to use and now can be applied in clinical settings and future outcome studies in Iran and other Persian-speaking communities.
Mousavi
Sayed Javad
SJ
Department of Physical Therapy, Faculty of Rehabilitation Sciences, Tehran University of Medical Sciences, and Physical Therapy Clinic, Milad Hospital, Tehran, Iran. jmousavi@razi.tums.ac.ir
Parnianpour
Mohamad
M
Abedi
Mohsen
M
Askary-Ashtiani
Ahmadreza
A
Karimi
Abdolkarim
A
Khorsandi
Aliakbar
A
Mehdian
Hossein
H
D000328:Adult; D015331:Cohort Studies; D054521:Cultural Competency; D004185:Disability Evaluation; D005260:Female; D006801:Humans; D007492:Iran; D007592:Joint Diseases / Q000175:diagnosis*; D008297:Male; D008875:Middle Aged; D009468:Neuromuscular Diseases / Q000175:diagnosis*; D034941:Upper Extremity