Related Experiment Video
Updated: Dec 6, 2025

Development of a Virtual Reality Assessment of Everyday Living Skills
Published on: April 23, 2014
Validity and reliability of the Persian version of the Quick Exposure Check (QEC) in Iranian construction workers
Hamid Reza Mokhtarinia1,2, Sahar Abazarpour1, Charles Philip Gabel3
1Department of Ergonomics, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
Background:
The Quick Exposure Check (QEC) is an instrument to identify occupational risk factors, and to screen subjects for the risk of musculoskeletal disorders in their workplace.
Objectives:
The aim of this prospective observational study was the cross-cultural adaptation of the QEC for Persian (QEC-Pr) speaking workers and the determination of the minimally required psychometric properties, including reliability and validity, in a Persian population.
Methods:
The forward-backward translation was completed according to the published guidelines. A total of 217 male construction workers were recruited. The Rapid Upper Limb Assessment (RULA) tool was used as the criterion. The Inter- and intra-rater reliability was performed respectively in a sub-sample of n = 50 and n = 30. Convergent validity was determined from the correlation between the QEC-Pr and the RULA. Internal consistency was assessed using Cronbach's α.
Results:
High levels of inter-rater reliability (ICC2.1 range = 0.79-0.93), intra-rater reliability (ICC2.1 range = 0.74-0.89) and internal consistency (α= 0.74) were obtained. Concurrent validity between the different sections of the QEC and RULA scores were determined to be fair but below the desired level (range r = 0.41-0.44).
Conclusions:
The QEC-Pr can be applied as a specific risk assessment instrument for different occupational situations, such as the construction industry, in Persian language populations.
Related Concept Videos
Reliability and Validity
Survey Safety
Cochran's Q Test
Testing Water Quality
Vebe Test
To conduct the test, concrete is placed into the slump cone. The concrete is filled in layers and...
Design Example: Managing Concrete Workability

