Related Experiment Video
Updated: Jul 29, 2026

05:28
Quantifying Corticolous Arthropods Using Sticky Traps
Published on: January 19, 2020
A study of logger fatalities from 1992-2000
1NIOSH, Spokane Research Laboratory, Spokane, WA 99207, USA. dus3@cdc.gov
Summary
Treefallers face the highest risk of death in logging operations, accounting for 63% of fatalities. While overall logger fatality rates have slightly decreased, this high-risk group remains a concern.
Area of Science:
- Occupational Health and Safety
- Forestry Operations
- Accident Analysis
Background:
- Logging is an inherently dangerous occupation.
- Previous studies have identified various risk factors in logger fatalities.
- Understanding specific high-risk groups is crucial for targeted safety interventions.
Purpose of the Study:
- To identify specific logger roles with elevated fatality risks.
- To analyze contributing factors to logger deaths between 1992 and 2000.
- To compare current fatality trends with historical data.
Main Methods:
- Statistical analysis of 780 logger fatalities from 1992-2000.
- Examination of fatality data based on logger role, geographic region, and employer size.
- Comparative analysis with logger fatality rates from 1980-1988.
Main Results:
- Treefallers accounted for nearly 63% of all logger fatalities.
- Region of occurrence and employer size were not significant factors in treefaller fatalities.
- Northeast and Midwest regions exhibited a higher percentage of fatalities compared to South and West regions.
Conclusions:
- The overall logger fatality rate slightly decreased from 1980-1988 to 1992-2000.
- Treefallers consistently represent the occupational group with the highest fatality rate.
- Targeted safety measures for treefallers are essential to further reduce logger mortality.
Related Concept Videos
Lumber
Lumber is derived from logs which are harvested, debarked, and processed into long pieces with a rectangular cross-section. The transformation of logs into lumber involves multiple steps, beginning with an automated saw that slices the log into slabs. These slabs are then transported via a conveyor belt to smaller saws, where they are cut into square-edged pieces of specific widths.
Initially, the surfaces of these lumber pieces are rough, and their dimensions may vary slightly from one end to...
Initially, the surfaces of these lumber pieces are rough, and their dimensions may vary slightly from one end to...
Assumptions of Survival Analysis
Survival models analyze the time until one or more events occur, such as death in biological organisms or failure in mechanical systems. These models are widely used across fields like medicine, biology, engineering, and public health to study time-to-event phenomena. To ensure accurate results, survival analysis relies on key assumptions and careful study design.

