 5. Test of the pre-final version of the instrument in a small sample 30-40 individual to assess its content and face validity according to patients feedback and collect comments about wording and clarity of the translated version via semi-structured interview. The sample will fulfill the study inclusion and exclusion criteria of the proposed LBP sample that will be recruited for the validation and reliability testing. Patients will be asked to complete the pre-final Arabic version of COMI and will be asked to comment on any linguistic ambiguity. Finally, researcher will discuss received comments and a consensus will be done to adapt any necessary changes. 