The Impact of Comorbid Chronic Pain on Older Adults With Depression in Behavioral Activation

This qualitative nested sub-study will aim to explore how chronic pain (as defined as pain lasting for more than 3 months) impacts older adults' depression and treatment in a brief psychological therapy of behavioral activation (BA)

Inclusion Criteria:Previously provided optional consent to participate in a qualitative study as part of the BASIL+ trialNot enrolled or offered to take part in any other qualitative study linked with the BASIL+ trial (i.e, the nested BASIL+ qualitative study or the therapeutic alliance sub-study)Suffering chronic pain. This will be assumed by individual scores on the (short-from 12) SF-12 and EuroQoal 5th Edition (EQ-5D) at baseline in the BASIL + trial. Patients who have responded as "moderate, quite a bit or extremely" on question 8 of the SF-12 at baseline and/or responded as having "moderate or extreme pain or discomfort" on the EQ-5D question 4 at baseline will be "assumed" to experiencing some level of pain. A further 2 telephone screening questions by the PI of this sub-study (Alexandra Carne) will assess how often patients have pain and how pain limits their life/work activities in the last 3 months. This will confirm the presence of chronic pain.Participants will have had either a 'favourable' or 'non' favourable' response to treatment. This is defined as having a change of 0.5 SD on the PHQ-9 from baseline to the primary outcome point at 3 months.Exclusion Criteria:1. Does not fulfill the inclusion criteria