Suicide in Spanish Farmers in Two Geographical Areas with Differing Rates of Pesticide Use

Abstract

This study assesses whether farmers’ suicides were associated with the pesticide use in Spain. The cohort study followed 9.5 million men aged 20–64 years who were employed in 2001. The mortality among farmers and non-farmers during the period 2001–2011 was estimated in a geographical area with high pesticide use and in an area with low pesticide use. For three major causes of death (suicide, unintentional accidents, and rest of causes of death), we estimated the age-standardized mortality rates with 95% confidence intervals (CI) between farmers and non-farmers in both areas. Farmers in the high pesticide use area showed a lower mortality rate of suicide and unintentional accidents than farmers in the rest of Spain, with mortality rate ratios of 0.74 (95% CI 0.65–0.85) and 0.57 (95% CI 0.52–0.62), respectively. Our findings on pesticide use and farmers’ suicide are different from those observed in several previous investigations.