Patterns of fatal machine rollovers in Canadian agriculture.

INTRODUCTION Our objectives were to examine the activities and circumstances associated with agricultural machine-related rollover fatalities. METHODS We identified agricultural machine rollover fatalities recorded by the Canadian Agricultural Injury Surveillance Program (CAISP) in 1990-2005. We determined sideways and backwards rollovers by year, age and sex of the victims, agricultural season, machine type, and the activity, circumstances and location of the injury event. RESULTS The annual rate of rollover fatalities in Canada was 9.1 per 100,000 farm operations. Rollover fatalities decreased to 30% of baseline over the 16-year study period (p = .004). Fatal rollovers most often occurred among men aged 50-69 years and 60-79 years for sideways and backwards rollovers, respectively. DISCUSSION Sideways rollovers occur when driving across an incline or at the edge of a ditch bordering a roadway or field. Backwards rollovers occur when driving up an incline, towing or extracting stuck machines, pulling stumps or trees, and towing implements or logs. Primary prevention programs for rollover injuries should target these identified patterns of injury.