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Inter-rater reliability of the Quebec Task Force classification system for recent-onset Whiplash Associated Disorders
Yaadwinder Shergill1,2, Pierre Côté3,4, Heather Shearer3,4
1Department of Health Research Methods, Evidence, and Impact - McMaster University.
The Journal of the Canadian Chiropractic Association
|October 18, 2021
Summary
The inter-rater reliability of the Quebec Task Force (QTF) classification for Whiplash-Associated Disorders (WAD) varied significantly. Standardized training may improve WAD classification consistency among clinicians.
Area of Science:
- Chiropractic research
- Clinical assessment
Background:
- The Quebec Task Force (QTF) classification system is used for Whiplash-Associated Disorders (WAD).
- Inter-rater reliability of the WAD classification system is not well-established.
Purpose of the Study:
- To determine the inter-rater reliability of the WAD classification system.
- To compare the WAD classification between an experienced chiropractor and two chiropractic residents.
Main Methods:
- An inter-rater reliability study was conducted.
- Baseline clinical data from 80 participants in a WAD conservative management trial were used.
- Cohen's kappa (k) and 95% confidence intervals (CI) were reported.
Main Results:
- Inter-rater reliability for WAD grade classification ranged from k=0.04 to k=0.80.
- The mean duration of WAD symptoms was 7.6 days.
Conclusions:
- WAD classification inter-rater reliability varied considerably among clinicians.
- Clinician experience and understanding of criteria may influence WAD classification.
- Standardized training could enhance WAD classification consistency; further research with diverse clinicians is recommended.
