American Journal of Public Health, Vol 90, Issue 4 608-614, Copyright © 2000 by American Public Health Association
Lifetime prevalence of and risk factors for psychiatric disorders among Mexican migrant farmworkers in California
E Alderete, WA Vega, B Kolody and S Aguilar-Gaxiola
Department of Health Policy Administration, School of Public Health, University of California, Berkeley, USA.
OBJECTIVES: In this study, the prevalence of and risk factors for 12
psychiatric disorders were examined by sex and ethnicity (Indian vs
non-Indian) among Mexican migrant farm-workers working in Fresno County,
California. METHODS: Subjects aged 18 through 59 years were selected under
a cluster sampling design (n = 1001). A modified version of the Composite
International Diagnostic Interview was used for case ascertainment. The
effects of sociodemographic and acculturation factors on lifetime
psychiatric disorders were tested. RESULTS: Lifetime rates of any
psychiatric disorder were as follows: men, 26.7% (SE = 1.9); women, 16.8%
(SE = 1.7); Indians, 26.0% (SE = 4.5); non-Indians, 20.1% (SE = 1.3). Total
lifetime rates were as follows: affective disorders, 5.7%; anxiety
disorders, 12.5%; any substance abuse or dependence, 8.7%; antisocial
personality, 0.2%. Lifetime prevalence of any psychiatric disorder was
lower for migrants than for Mexican Americans and for the US population as
a whole. High acculturation and primary US residence increased the
likelihood of lifetime psychiatric disorders. CONCLUSIONS: The results
underscore the risk posed by cultural adjustment problems, the potential
for progressive deterioration of this population's mental health, and the
need for culturally appropriate mental health services.