Validity of Arabic version of the two-question Quick Inventory of Depression (QID-2-Ar): Screening for multiple sclerosis in an Arab environment and during the Syrian war

The QID-2-Ar is a good screening test for detecting depression. Using a threshold score of ≥1 rather than 2 resulted in more depressed patients being correctly identified. The Arabic version of the QID-2-Ar also has highly favorable psychometric properties. It is valid for assessing depression, especially the two main depressive symptoms (depressive mood and anhedonia) listed in DSM-V. This is a useful tool for researchers and practitioners, and a threshold score of 2 on the QID-2-Ar is recommended to be more certain that all those with depression are detected without having to use a complete depression questionnaire such as the Beck Depression Inventory (BDI)-II.