Related Experiment Video
Updated: Mar 12, 2026

Identification of Disease-related Spatial Covariance Patterns using Neuroimaging Data
Published on: June 26, 2013
Understanding risk factor patterns in ATV fatalities: A recursive partitioning approach
Elise Lagerstrom1, Sheryl Magzamen2, Lorann Stallones3
1Department of Environmental and Occupational Health Sciences, Colorado State University, Fort Collins, CO, United States.
Hundreds of ATV deaths occur annually. This study identified key contributing factors using the agent-host-environment model, revealing that not wearing helmets and alcohol/drug use were prevalent in fatalities.
Area of Science:
- Epidemiology
- Public Health
- Accident Prevention
Background:
- All-terrain vehicle (ATV) fatalities represent a significant public health concern in the United States.
- Contributing factors to ATV-related deaths remain inadequately understood, hindering targeted prevention efforts.
Purpose of the Study:
- To investigate associations between factors contributing to ATV fatalities.
- To apply the agent-host-environment epidemiological triangle model to understand ATV death risk factors.
Main Methods:
- Utilized incident reports of ATV fatalities from the U.S. Consumer Product Safety Commission (CPSC) between 2011-2013.
- Employed Chi-square Automatic Interaction Detector (CHAID) analysis to model relationships between risk factors and fatalities.
- Examined helmet use (host), crash type (agent), and location (environment) within the epidemiological framework.
Main Results:
- A total of 1193 ATV fatalities were analyzed.
- Helmet non-use was recorded in 88% of fatalities where status was known.
- Alcohol or drug use was present in 84% of fatalities where status was known.
- Key recurring factors included age, helmet use, geographic region, and location of the crash.
Conclusions:
- The study provides a model for understanding the complex interplay of risk factors in ATV fatalities.
- The CHAID analysis combined with the epidemiological triangle effectively visualizes host, agent, and environment interactions.
- Findings can inform targeted interventions to reduce ATV-related deaths.
Related Concept Videos
Survival Tree
Building a Survival Tree
Constructing a...
Relative Risk
Actuarial Approach
Consider the example of a high-risk surgical procedure with significant early-stage mortality. A two-year clinical study is conducted,...
Determination of Expected Frequency
Introduction to Test of Independence
The test statistic for a test of independence is similar to that of a goodness-of-fit test:
Hypothesis Test for Test of Independence
H0: The two variables (factors)...

