Association between inequalities in mental health resources and burdens of mental health disorders in 146 countries and territories: An observational study

Abstract

Background: Mental health disorders impose a substantial social and economic burden. We conducted a comprehensive assessment of global mental health resource allocation and the associated burdens of mental health disorders, examining the relationship between these two factors.

Methods: We utilized data from the WHO Global Health Observatory and GBD 2021 to encompass 146 countries. We employed spatial autocorrelation analysis and Lorenz curves to characterize the spatial distribution. Additionally, we examined the association between mental health resources and the burdens of mental disorders using a generalized linear regression model (GLM).

Results: Countries and territories with higher income levels were more likely to have greater mental health resources (p < 0.05). Globally, the average mental health resource allocation index (IMRA) was 18.14, and Moran's I was 0.509 (p < 0.001). The Lorenz curve of mental health resources lay below the equality line, suggesting that these resources were more concentrated in countries and territories with higher HDI values. Between 2011 and 2021, the age-standardized incidence rate of all mental health disorders increased significantly (EAPC: 1.41 %, 95 % CI: 0.40 % to 2.53 %, p = 0.011). In multivariable GLM, a negative association was observed between the Index of IMRA and total mental health incidence.

Conclusion: Inequalities in mental health resources persist, and the burdens of mental disorders are increasing globally. Our findings underscore the critical need to reduce the overall burden of mental health disorders through enhanced allocation of prevention-oriented resources. Countries at different levels of human development face distinct challenges and priorities in mental health resource allocation.

Keywords: Burdens; Incidence; Inequality; Mental disorders; Mental health resources; Spatial distribution.