Psychiatric disorders among the Mapuche in Chile

Area of Science:

• Psychiatry
• Epidemiology
• Indigenous Health

Background:

• The Mapuche are Chile's largest indigenous group.
• Limited mental health data exists for indigenous populations in South America.
• This study addresses a gap in understanding indigenous mental health in Chile.

Purpose of the Study:

• To investigate the prevalence of psychiatric disorders using DSM-III-R criteria among indigenous (Mapuche) and non-indigenous populations in Chile.
• To compare mental health service utilization between these two groups.
• To provide preliminary data on the mental health status of the Mapuche people.

Main Methods:

• A stratified random sample of 75 Mapuche and 434 non-Mapuche residents in Cautín province were interviewed.
• The Composite International Diagnostic Interview (CIDI) was used to assess lifetime and 12-month psychiatric disorder prevalence.
• Prevalence rates and service utilization were estimated for both groups.

Main Results:

• Lifetime psychiatric disorder prevalence was 28.4% for Mapuche and 38.0% for non-Mapuche.
• 12-month prevalence was 15.7% for Mapuche and 25.7% for non-Mapuche.
• Generalized anxiety disorder, simple phobia, and drug dependence were less common among Mapuche; their mental health service utilization was low.

Conclusions:

• This preliminary study suggests potential differences in mental health disorder prevalence between Mapuche and non-Mapuche populations.
• Low service utilization among Mapuche with mental illness highlights a critical need for culturally appropriate interventions.
• Further research on the mental health of indigenous populations in South America is essential.