The current status of urban-rural differences in psychiatric disorders.
Level 1 - systematic review of randomized trials
Meta-analysis of observational population survey studies
PubMed 19624573 · doi:10.1111/j.1600-0447.2009.01438.x
What was done
A meta-analysis evaluated urban-rural differences in psychiatric disorder prevalence across 20 population survey studies published from 1985 onward. Pooled urban-rural odds ratios (OR) were calculated for overall psychiatric disorder prevalence as well as specifically for mood, anxiety, and substance use disorders, with adjustment for potential confounders.
What was found
Significant pooled urban-rural odds ratios were found for total psychiatric disorders, mood disorders, and anxiety disorders (higher in urban areas). No significant association with urbanization was found for substance use disorders. Confounder adjustment had a limited impact on the results. The abstract reports no exact numerical odds ratios, confidence intervals, or p-values.
Why it matters
This review aggregates disparate survey literature to confirm that urban environments are associated with higher rates of mood and anxiety disorders, informing mental health resource allocation.
Limits
The abstract reports no numerical effect sizes, confidence intervals, or total participant counts. The underlying data come from population surveys (cross-sectional observational design), precluding causal inference regarding whether urbanization causes psychiatric disorders or attracts vulnerable populations.
Cited by
- context Studies show that moving to urban environments increases rates of anxiety and depression by over 20%, largely due to higher light and noise exposure.