The HADS is a self-report questionnaire that can be completed by the patient in a few minutes. Each of the 14 items is scored on a 4-point scale (0-3), with higher scores indicating greater anxiety or depression. The maximum score for each subscale (HADS-A and HADS-D) is 21. Scores are categorized as follows:
0-7: Normal 8-10: Borderline abnormal (borderline case) 11-21: Abnormal (case)