Table 1

Interview topic guide

Topic of discussion Probe areas
General experiences of treatment
You recently received a course of CBT/BA as part of the COBRA trial. Please tell me about your experiences of receiving treatment
- What it felt like receiving treatment
- Anything in particular they liked or found helpful
- Anything they didn’t like or found less helpful
Barriers to treatment
We are interested in reasons why people might decide to attend some or all of their therapy sessions, including completing some exercises and maybe not others. Please could you tell me about your reasons for deciding to continue with or stop therapy?
- Personal contextual factors
- Specific therapy factors
- Therapeutic relationship factors
- Stages or exercises causing difficulty?
- Anything (else) that could have been done to overcome thesedifficulties
Cognitive change strategies
We are interested in your views on the role of therapy in changing your beliefs or the way you think, and any impact this may have had on your mood. Did the therapy have any effect on your beliefs or the way you think?
- Underlying beliefs
- Style of thinking
- Influence of the changes in the way they think on mood/depression
Behavioural change strategies
We are interested in your views on the role of therapy in changing your behaviour, and any impact this may have had on your mood. Did the therapy have any effect on your behaviour?
- Changes in specific behaviour, for example, avoidance,rumination
- Recognising triggers and changing behaviour in response tothem
- Influence of behavioural changes on mood/ depression
Most important part of therapy
What was the most important aspect of therapy for you?
- Therapeutic relationship
- Exercises/homework tasks
Broader impact of treatment
Please tell us about the impact the treatment had on you generally or in other aspects of your life.
- Thoughts and opinions on depression
- The way they feel about themselves
- The role of psychological therapies in the treatment of depression
- Impact of treatment on any other areas of life
  • BA, behavioural activation; CBT, cognitive behavioural therapy.