Related Experiment Video
Updated: Nov 16, 2025

Measuring Light-Switching Behavior Using an Occupancy and Light Data Logger
Published on: January 16, 2020
Differences between risk situations identified using a self-reported questionnaire and an observational method
Mohsen Zare1,2, Maxime Norval2, Julie Bodin2
1ERCOSGroup (pole), Laboratory of ELLIAD-EA4661, UTBM-University of BourgogneFranche-Comté, France.
Background:
This study investigates work-related musculoskeletal disorders risk estimation by frequently as used as ergonomic methods in the field.
Objective:
To identify the difference in risk estimation by an in-house observational method and a self-reported questionnaire, and to evaluate the complementary aspects of these methods.
Methods:
A sample of 15 operators who worked on the assembly workstations was selected from a truck manufacturing plant. The risk assessment of these workstations (28 scenarios) was performed by the observational method and the self-reported questionnaire. The agreement between both methods to identify risk situations was measured with the weighted Kappa coefficient.
Results:
The observational method and the self-reported questionnaire deployed on the same activity estimated different risk situations.
Conclusion:
This analysis does not reveal that one tool is more powerful than the other one, but shows the probability of different risk estimation. The complementary effect of each method might be considered for further investigation concerning musculoskeletal risk factors.
More Related Videos
05:59Visualization of Intensity Levels to Reduce the Gap Between Self-Reported and Directly Measured Physical Activity
Published on: March 7, 2019
08:01Virtual Hand with Ambiguous Movement between the Self and Other Origin: Sense of Ownership and 'Other-Produced' Agency
Published on: October 28, 2020
Related Concept Videos
Naturalistic Observations
Observational Studies
There are three types of observational studies – Prospective, retrospective, and cross-sectional.
Prospective Study
Prospective studies, also known as longitudinal or cohort studies, are carried out by collecting future data from groups sharing similar characteristics. One...
Data Collection by Observations
An astronomer viewing the motion and brightness of stars in the sky and recording the data is an example of observational data collection. A botanist recording...
Strategies of Self-Presentation III: Self-Monitoring
Surveys
Odds Ratio