Plain English Summary
Background and study aims
This study aims to evaluate the effectiveness and cost-effectiveness of collaborative care in treating the symptoms of depression in patients who have coronary heart disease (CHD) and/or diabetes. Collaborative care is a method of care management in which the patient, medical doctors and other specialists collaborate to design and deliver a structured care programme for the patient. In the USA there is a lot of evidence suggesting that collaborative care may be beneficial to patients with depression as well as CHD and/or diabetes.
Who can participate?
The study is open to patients aged 18 and over in the North West of the UK who have a diagnosis of CHD and/or diabetes as well as depressive symptoms.
What does the study involve?
General practice surgeries that enter the study are randomly allocated to provide either collaborative care or usual care for patients who are participating in the study.
What are the possible benefits and risks of participating?
Participants will have the chance to receive collaborative care, which has been shown to reduce symptoms of depression for CHD and/or diabetes patients in the USA. We do not anticipate any side effects, risks or disadvantages for people who participate in this study.
Where is the study run from?
The study is being run by the Collaboration for Leadership in Applied Health Research and Care (CLAHRC) at the University of Manchester (UK).
When is the study starting and how long is it expected to run for?
January 2012 to January 2013.
Who is funding the study?
National Institute of Health Research (UK).
Who is the main contact?
Dr Andrea Cherrington
Community Based Medicine
The University of Manchester
+44 (0)161 306 7043
COllaborative INterventions for CIrculation and DEpression (COINCIDE): Care for depression in people with diabetes and/or coronary heart disease
Depression is a prevalent issue for patients suffering from long term conditions (LTC) such as diabetes or coronary heart disease. Patients who experience depression alongside a LTC may find it more difficult to manage their illness properly and experience a poorer standard of health. Effective treatments for depression are available but are under-prescribed for patients with LTCs as depression is frequently undetected and may be viewed by both patients and health professionals as a normal consequence of ill health.
The COINCIDE trial will test the effectiveness of collaborative care in the UK for patients with depression and a long-term condition.
More details can be found at http://public.ukcrn.org.uk/Search/StudyDetail.aspx?StudyID=11201
Preston MRES North West, 28/10/2011 ref: 11/NW/0742
Randomised interventional treatment
Primary study design
Secondary study design
Randomised controlled trial
Patient information sheet
Not available in web format, please use the contact details below to request a patient information sheet
The trial is being run by the University of Manchester and will recruit 450 patients from 30 general practices in the North West of the UK. Patients will be recruited who have signs of depression as well as depression and/or diabetes. General practices will be randomised to give their patients collaborative care or usual care. We will measure levels of depression at study entry and at six month follow-up to evaluate if patients receiving collaborative care have lower levels of depression, compared to those that received usual care. The trial will also evaluate the extent to which patients have utilised health care services and examine the cost-effectiveness of collaborative care.
Followed up at 6 months.
Primary outcome measure
SCL90 depression scale measured at 6 months
Secondary outcome measures
Patient Health Questionnaire (PHQ-9) measured at 6 months
Overall trial start date
Overall trial end date
Reason abandoned (if study stopped)
Participant inclusion criteria
1. Patients aged 18 or over
2. Are listed on GP practice QOF registers with a diagnosis of coronary heart disease and/or Type 1 or Type 2 diabetes
3. Have persistent depressive symptoms (>10 on Patient Health Questionnaire PHQ9).
4. Patients who are already receiving antidepressant medication or psychotherapy but who still score >10 on the PHQ9.
5. We will also include non-English speaking patients of South Asian origin
6. Male and female participants
Target number of participants
UK Sample Size: 450
Participant exclusion criteria
1. Aged less than 18 years old
2. Refused to consent
3. GP has removed them from the diabetes/CHD database
4. Suffer from a severe and enduring mental disorder
5. At risk of suicide and require immediate care from a crisis management team
6. If their depression is linked to bereavement
Recruitment start date
Recruitment end date
Countries of recruitment
Trial participating centre
The University of Manchester
National Institute for Health Research (NIHR) - CLAHRC (UK)
Funding Body Type
Funding Body Subtype
Results and Publications
Publication and dissemination plan
Not provided at time of registration
Intention to publish date
Participant level data
Not provided at time of registration
Basic results (scientific)
2012 protocol in: http://www.ncbi.nlm.nih.gov/pubmed/22906179
2013 protocol update in: http://www.ncbi.nlm.nih.gov/pubmed/23663556
2015 results in: http://www.ncbi.nlm.nih.gov/pubmed/25687344
2016 results in: http://www.ncbi.nlm.nih.gov/pubmed/27855101
Coventry PA, Lovell K, Dickens C, Bower P, Chew-Graham C, Cherrington A, Garrett C, Gibbons CJ, Baguley C, Roughley K, Adeyemi I, Keyworth C, Waheed W, Hann M, Davies L, Jeeva F, Roberts C, Knowles S, Gask L, Collaborative Interventions for Circulation and Depression (COINCIDE): study protocol for a cluster randomized controlled trial of collaborative care for depression in people with diabetes and/or coronary heart disease., Trials, 2012, 13, 139, doi: 10.1186/1745-6215-13-139.
Coventry PA, Lovell K, Dickens C, Bower P, Chew-Graham C, Cherrington A, Garrett C, Gibbons CJ, Baguley C, Roughley K, Adeyemi I, Keyworth C, Waheed W, Hann M, Davies L, Jeeva F, Roberts C, Knowles S, Gask L, Update on the collaborative interventions for circulation and depression (COINCIDE) trial: changes to planned methodology of a cluster randomized controlled trial of collaborative care for depression in people with diabetes and/or coronary heart disease., Trials, 2013, 14, 136, doi: 10.1186/1745-6215-14-136.
Coventry P, Lovell K, Dickens C, Bower P, Chew-Graham C, McElvenny D, Hann M, Cherrington A, Garrett C, Gibbons CJ, Baguley C, Roughley K, Adeyemi I, Reeves D, Waheed W, Gask L, Integrated primary care for patients with mental and physical multimorbidity: cluster randomised controlled trial of collaborative care for patients with depression comorbid with diabetes or cardiovascular disease, BMJ, 2015, 350, h638, doi: 10.1136/bmj.h638.