The best-known and arguably the most well-known geriatric depression scale
the most widely used is the GDS (15 items). It can be completed directly by the patient or passed on by a caregiver (psychologist, doctor, nurse).
While this scale provides valuable information on the psycho-emotional state of the patient, it does not, however, on its own, make a diagnosis of depression.
A score between 0 and 5 is normal. A score between 5 and 9 indicates probable depression. A score of 10 or more almost always indicates depression.