The reliability of an Arabic translation of the chronic obstructive pulmonary disease assessment test.
OBJECTIVE
To produce a conceptually equivalent Arabic version of the Chronic Obstructive Pulmonary Disease (COPD) Assessment Test (CAT), and to assess its reliability.


METHODS
A prospective observational study was carried out from June 2010 to September 2010 at King Abdulaziz Medical City and King Khalid University Hospital, Riyadh, Saudi Arabia. We conducted this study in 2 phases. Phase 1: the translation of the CAT from English to Arabic, through forward and backward translation, as well as pilot testing. Phase 2: assessment of the test-retest reliability of the CAT for 45 patients with COPD who received optimal care by their pulmonologist.


RESULTS
This study was conducted on 45 participants. The CAT mean total (+/- SD) score at the test session was 10.7+/-5.8, and 9.2+/-4.5 at the re-test session. The interclass correlation of the total score was 0.9 (p=0.000076). The strongest correlation was for the item of confidence in leaving home with a value of 0.92 (p=0.000082), whereas the weakest was for the item related to sleep with a value of 0.53 (p=0.007).


CONCLUSIONS
The Arabic version of the CAT was found to be easy to administer, reliable, and had a strong interclass correlation reflecting stability over time and across the items.
Department of Clinical Affairs, College of Medicine, King Saud Bin Abdulaziz University for Health Sciences, PO Box 84252, Riyadh 11671, Kingdom of Saudi Arabia. almoamary@yahoo.com
Mohamed S
MS
Al-Moamary
Mohamed S
MS
Al-Hajjaj
Hani M
HM
Tamim
Mohamed O
MO
Al-Ghobain
Hatem A
HA
Al-Qahtani
Faisal A
FA
Al-Kassimi
D000368:Aged; D005260:Female; D006801:Humans; D007802:Language; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D029424:Pulmonary Disease, Chronic Obstructive / Q000503:physiopathology*; D015203:Reproducibility of Results; D012529:Saudi Arabia