Prevalence of Mental Health Disorders in General Practice from 2014 to 2024: A literature review and discussion paper

Background: Many consultations in primary care involve patients with mental health problems, and primary care is typically the place where many such patients initially seek help. While considerable research has examined the prevalence of mental health disorders in primary care, relatively few papers have examined this issue in recent years. This study aims to address this gap by reviewing contemporary literature from 2014 to 2024 on the prevalence of mental health disorders among general practice patients. Methods: A comprehensive search across PubMed, PsycINFO, and Google Scholar was conducted, adhering to Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines for article selection and assessment, examining the prevalence of mental health disorders in general practice. Results: Studies varied in methodologies and healthcare settings, with reported prevalence rates of mental health disorders ranging from 2.4% to 56.3%. Demographic characteristics (female gender, older age) were associated with a higher prevalence of mental health disorders in the studies identified. Studies based on patient interviews reported broader prevalence (2.4-56.3%) compared to studies using electronic medical record reviews (12-38%). Prevalence also varied between countries. Notably, there has been a lack of post-COVID-19 studies, especially within Europe, examining the prevalence of mental health prevalence in primary care. Conclusions: Mental health problems are still common among patients attending general practice; the approach to data collection (i.e., prospective interviews with patients), female gender and older age appear to be correlates of higher estimates. Further research involving a large-scale study with multiple sites is a priority.