Projected incidence and cost of tractor overturn-related injuries in the United States.

In 2004, the Agricultural Safety and Health Centers, supported by the National Institute for Occupational Safety and Health, launched an initiative to conduct research on the consequences of and approaches to control of agricultural tractor-related injuries. The most significant cause of fatal injuries is associated with tractor overturns, and a recognized intervention to control these injuries is equipping the tractor with a rollover protective structure (ROPS). The purpose of this study was to determine the incidence of tractor-related fatal and nonfatal injuries and their social costs. Based upon the annual average incidence of 125 tractor-overturn-related fatalities in the U.S. for the period 1992 to 2002, an analysis was conducted of injuries over the 25-year period 1997 to 2021. Using the number of fatalities as an index value, the analysis found that in 1997, there were a total of 2,412 tractor overturns. These overturns were associated with 125 deaths and 573 nonfatal injuries requiring at least outpatient treatment. Compared to ROPS-equipped tractors, 123 (98.6%) deaths and 543 (95%) of nonfatal injuries were associated with non-ROPS tractor overturns. The undiscounted social cost of these injuries totaled $1.5 billion in 2006 dollars for the 25-year period when using cost factors for the agricultural population. When discounted at 3%, this total was $1.1 billion, and when discounted at 5%, it was $0.9 billion. In an alternative analysis, when using cost factors for all occupations including agriculture, the undiscounted social cost totaled $2.9 billion, $2.1 billion when discounted at 3%, and $1.7 billion discounted at 5% for the 25-year period. Non-ROPS tractors as compared to ROPS-equipped tractors account for at least 97% of the costs, no matter the discount rate or cost factors used.

Cost effectiveness of a dealer's intervention in retrofitting rollover protective structures.

OBJECTIVE: To evaluate the cost effectiveness of a 4.5 year education campaign that promoted farmers' adoption of rollover protective structures (ROPS) to prevent tractor overturn injuries. DESIGN: Randomized controlled trial, decision analysis, and cost effectiveness analysis. SETTING: One treatment county and one control county in the State of Kentucky. INTERVENTION: A campaign by a local tractor and equipment dealership to encourage farmers to purchase and install ROPS and seatbelt retrofit kits for older tractors. MAIN OUTCOME MEASURES: Number of injuries averted and cost per injury averted. RESULTS: The dealership's 4.5 year intervention was shown to potentially reduce both fatal (0.26) and non-fatal (1.50) injuries by 2.6% in its county over the intervention period using a 20 year analytic horizon. When extrapolated statewide, 6.7 lives would be saved and 39 non-fatal injuries would be averted over the combined 24.5 year combined intervention period and analytic horizon. The intervention for this period was cost effective with a "savings" of 35,713 dollars per injury (fatal plus non-fatal) averted at a 4% discount rate. CONCLUSIONS: Tractor manufacturer promotions can influence their dealerships to promote ROPS retrofits by their customers. A manufacturer backed dealer ROPS retrofit campaign was cost effective in reducing overturn related injuries.

Cost-effectiveness of a ROPS retrofit education campaign.

A community educational campaign implemented in two Kentucky counties was effective in influencing farmers to retrofit their tractors with rollover protective structures (ROPS) to protect tractor operators from injury in the event of an overturn. This article reports on the cost-effectiveness of this program in the two counties when compared to no program in a control county. A decision analysis indicated that it would be effective at averting 0.27 fatal and 1.53 nonfatal injuries over a 20-year period, and when this analysis was extended statewide, 7.0 fatal and 40 nonfatal injuries would be averted in Kentucky. Over the 20-year period, the cost-per-injury averted was calculated to be $172,657 at a 4% annual discount rate. This cost compared favorably with a national cost of $489,373 per injury averted despite the additional program cost in Kentucky. The principle reason for the increased cost-effectiveness of the Kentucky program was the three-fold higher propensity for tractors to overturn in Kentucky. The cost-per-injury averted in one of the two counties was $112,535. This lower cost was attributed principally to incentive awards financed locally for farmers to retrofit their tractors with ROPS.

Stories or statistics? Farmers' attitudes toward messages in an agricultural safety campaign.

Farming is the second most hazardous occupation in the U.S. The high mortality rate is due in large part to farm equipment hazards, particularly tractor overturns. Injuries and deaths associated with tractor overturns could be prevented with the use of a rollover protective structure (ROPS). In spite of the known dangers associated with overturn incidents, farmers are reluctant to retrofit ROPS on older tractors. Few agricultural safety campaigns target the issue of ROPS retrofits, and none have been evaluated systematically. This article reports a study that examines a set of messages that were central to the Community Partners for Healthy Farming project. This study indicates that narrative-based messages and messages incorporating fear appeals are more favorably evaluated by farmers than messages that simply inform farmers or messages that rely on statistics.

Embedded performance measures as teaching and assessment devices.

Standard methods of testing trainees during courses on health and safety are time-consuming and, therefore, testing is rarely completed. Embedded performance measures, however, offer an alternative to traditional testing; they are completely integrated with instruction and require the learner to perform numerous short problem-solving tasks. The author focuses on the history of embedded performance measures and their effectiveness in health and safety training.