20% of patients with type 2 diabetes and/or chronic ischemic heart disease have poor mental health. Since these patients are managed in general practice interventions targeting poor mental health in these patients should be delivered in here.~Problem-solving therapy (PST) is a well-established psychotherapeutic method that can be delivered by health care providers in general practice.~The main objective of this study is to test the effectiveness of delivering PST for patients with T2D and/or IHS who suffer from poor mental health. We hypothesize that the patients' mental health will be improved after treatment with PST.~Health care providers from 12 general practices are trained in PST and subsequently provide PST for patients with T2D and/or IHS and poor mental health.~Patients are recruited at the annual control visit for the chronic disease. All patients are screened for impaired mental health with the WHO-5 questionnaire. Patients with a score below 50 are offered PST.~The study is conducted as a stepped wedge cluster-randomised controlled trial with a one-year follow-up. In this design clusters are stepped wise exposed to the intervention. Initially all general practices are in the control group. After four months half of the recruited GPs attend the PST training programme and switch to performing the intervention. After an additional four months the remaining GPs are educated in PST and all GPs now perform the intervention. Both general practitioners and practise nurses will perform PST consultations.~The power calculation is based on:~The primary outcome (PHQ-9 score at 6 and 12 months. The minimal clinical effect is 5 points)~ICC is estimated to 0,05.~Based on these assumptions we will include 194 patients with IHS and 194 patients with T2D (we expect 25% overlap) to obtain a power of 90%.
In Denmark the vast majority of patients with chronic ischemic heart disease and/or type 2 diabetes are managed in general practice. 20% of the patients suffer from poor mental health.~Problem-solving therapy (PST) is a psychotherapeutic method that is proven effective in adults with poor mental health. PST can be provided in general practice.~The main objective of this study is to test effectiveness of providing PST to this group patients.