Methods and baseline results of the Cohort of Health-Related Outcomes in Chronic Illness Care in General Practice in Denmark (CHRONIC-GP)

PURPOSE: The Cohort of Health-Related Outcomes in Chronic Illness Care in General Practice was established using data collected as part of a cluster-randomised trial. This aims to support the trial's follow-up and enable further examination of the interplay between chronic disease, multimorbidity (MM), polypharmacy (PP) and quality of life (QoL) in a Danish general practice setting. PARTICIPANTS: The cohort comprises 35 977 adult patients from 250 general practices participating in a cluster-randomised trial and had a response rate of 22.4%. Participants were either registered as chronic care patients or had attended an annual chronic disease consultation. They completed a comprehensive questionnaire on self-reported chronic conditions, medication use, QoL, treatment burden and patient-centred care. Additionally, 431 general practitioners (GPs) from the participating practices completed a questionnaire about managing patients with complex MM. FINDINGS TO DATE: Among participants, 51.9% were female, the mean age was 65.6 (SD 12.9) years, 93.1% had education beyond basic schooling, and half were retired. Conditions from more than one organ system-based disease group were reported by 82.2%, and 94.6% used one or more prescription medications. The main challenges reported by the participating GPs in managing patients with complex MM were keeping time and obtaining an overview of the patient's health status. FUTURE PLANS: Cohort data will be linked with Danish registries to improve the detection and treatment of chronic conditions and PP in general practice. REGISTRATION: The cluster randomised trial (MM600) is registered with ClinicalTrials.gov ID: NCT05676541.