Installing a cost-effective rollover protective structure (CROPS): a cost-effectiveness analysis.
Cost-effective rollover protective structures (CROPS) are tractor model-specific rollover protective structures (ROPS) that are as effective as existing ROPS retrofits (passed standardized structural static testing such as SAE J2194), but less costly (less than one-half the cost of existing ROPS retrofits). This study estimated the expected effects and costs at a per-tractor level for two options: No-CROPS and Install-CROPS. Expected injuries per tractor were 0.00169 with no CROPS and 0.00016 with CROPS installed, resulting in 0.00153 injuries prevented per tractor over a 20-year period. Expected costs were $457 and $248 with and without CROPS, respectively, over the same time period, giving the cost per injury prevented as $136,601. Comprehensive sensitivity analyses indicated that the probability of an overturn is one of the most important variables. When the cost of intervention ($1,000 for purchasing, shipping, and installation of ROPS retrofit) is used in the analysis, the cost-effectiveness ratio is $497,000 per injury prevented over the 20-year period. Thus, installing CROPS instead of existing ROPS retrofits improved the cost-effectiveness ratio substantially, with a 73% reduction in the net cost per injury prevented.
Owusu-Edusei
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Division of Safety Research, National Institute for Occupational Safety and Health, Morgantown, West Virginia, USA. kfo0@cdc.gov
Biddle
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EA
D000056:Accident Prevention / Q000191:economics*; D000383:Agriculture / Q000191:economics / Q000295:instrumentation*; D003362:Cost-Benefit Analysis; D004867:Equipment Design; D004869:Equipment Safety / Q000191:economics*; D006801:Humans; D016272:Occupational Health; D015541:Off-Road Motor Vehicles / Q000191:economics / Q000592:standards*; D014481:United States