1. What is your understanding of the term difficult to treat depression (DTTD)?

2. What is your understanding of other terms; viz: treatment-resistant depression (TResD)

treatment-refractory depression (TRefD), treatment-resistant major depressive disorder

(TRMDD) and major depressive disorder (MDD)?

3. What are your experiences of diagnosing DTTD?

4. What are your experiences of managing DTTD?

5. Does your management of these patients include:

a. using an illness management model or a chronic illness modelb. referring the patient to a psychiatristc. referring the patient to allied health professionals, and/or d. suggesting/prescribing non-pharmacological and/or complementary treatment?

6. If “no” to any of Question 5, have you ever considered using any of these options, do you have any other comments?