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Article Abstract
Background: The prevalence of anxiety disorders among the adult population in Latin America (LATAM) and its association with development indicators is insufficiently characterised. We estimated pooled regional, country, and sex-specific prevalence rates of anxiety disorders in LATAM based on International Classification of Diseases (ICD) or Diagnostic and Statistical Manual of Mental Disorders (DSM) criteria. Additionally, we examined the association between its prevalence and four country-level development indicators: Human Development Index (HDI), income inequality (Gini coefficient), Gender Inequality Index (GII), and Intentional Homicide Rate (IHR).
Methods: We conducted a systematic review and meta-analysis of population-based studies on the prevalence of ICD/DSM anxiety disorders in LATAM from 1990 to 2024, irrespective of language. We searched PubMed, PsycINFO, Cochrane Library, SciELO, LILACS, and grey literature. Study quality was assessed using JBI's critical appraisal tools. Pooled estimates were generated using random-effects meta-analysis, and heterogeneity was evaluated using the I-squared ( ) statistic. Meta-regression analyses were performed to examine the ecological association between anxiety disorders prevalence and four development indicators. The study was registered with PROSPERO (CRD42020190238).
Findings: Using data from 36 studies in LATAM, we calculated the lifetime, 12-month, and current prevalence of ICD/DSM anxiety disorders at 14.55% (95% Confidence Interval 12.32%-17.11%; = 97.9%); 6.61% (5.20-8.37; = 98.1%), and 3.27% (2.34-4.56; = 97.5%), respectively. Heterogeneity was high across prevalence periods, sexes, and countries (all ≥ 91.4%), warranting caution in interpreting pooled estimates. Elevated 12-month and current prevalence rates of anxiety disorders were associated with higher Gini coefficients ( ≤ 0.0013). Additionally, higher current prevalence was associated with lower HDI ( = 0.0103) and higher GII ( = 0.0023), while elevated 12-month prevalence was associated with higher IHR ( = 0.011).
Interpretation: This study shows that approximately one in seven people in LATAM experience anxiety disorders at some point in their lives. These findings highlight the need to strengthen mental health systems in the region, and evidence the association between prevalence of anxiety disorders and development indicators. Our results can serve as a baseline for tracking anxiety disorders and for informed decision-making at the national and regional levels. The substantial heterogeneity between studies and the underrepresentation of some countries underscore the imperative for enhancing regional mental health capacities.
Funding: Pfizer Independent Medical Education Grant (69879319).
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11986631 | PMC |
| http://dx.doi.org/10.1016/j.lana.2025.101057 | DOI Listing |
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