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Validity and reliability of sincerity test for dynamic trunk motions.

Authors
Ferguson-SA; Gallagher-S; Marras-WS
Source
Disabil Rehabil 2003 Feb-Mar; 25(4-5):236-241
NIOSHTIC No.
20022619
Abstract
Purpose: Marras et al. developed a technique to evaluate sincerity of effort during dynamic trunk motion performance. The validity and reliability of the technique have not been evaluated. Therefore, the objective of this study was to first determine whether or not a sincerity of effort measure correctly identified those giving a sincere effort in a blinded randomized control trial and second to quantify inter-rater and test-retest reliability. Methods: This article reports the findings of a two phase study. In phase one, the blinded evaluation, participants were randomly assigned to either a sincere or insincere performance condition. An examiner tested participants without knowledge of the participant's group membership. In the second phase, two examiners evaluated each participant twice to quantify inter-rater and test-retest reliability. Results: In the blinded phase the specificity was 100% and sensitivity was 90% for identifying sincere and insincere effort, respectively. Phase two results showed no significant difference in probability of sincere effort between raters or between testing sessions. Conclusion: A performance criterion that accurately identifies sincere vs insincere group membership during functional evaluations was identified. There were no significant differences between raters or between testing sessions. These findings indicate that this test is reliable and possesses good predictive validity in assessing sincerity of effort.
Keywords
Injury-prevention; Back-injuries; Ergonomics; Musculoskeletal-system; Musculoskeletal-system-disorders; Models
Contact
S. A. Ferguson, Biodynamics Laboratory, The Ohio State University, Columbus, OH, USA
CODEN
DREHET
Publication Date
20030218
Document Type
Journal Article
Email Address
ferguson.4@osu.edu
Fiscal Year
2003
NTIS Accession No.
NTIS Price
Issue of Publication
4-5
ISSN
0963-8288
NIOSH Division
PRL
Priority Area
Research Tools and Approaches: Control Technology and Personal Protective Equipment
Source Name
Disability & Rehabilitation
State
OH; PA
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