m2ABQ—a proposed refinement of the modified algorithm-based qualitative classification of osteoporotic vertebral fractures
Authors' conclusion
The m2ABQ system demonstrates moderate interobserver agreement and practical feasibility for classifying osteoporotic vertebral body fractures.
Study context
- Population
- Thoracic and lumbar spine radiographs of patients 65 years of age and older, obtained from clinical institutional radiology records using natural language processingfive raters
- Outcome
- Interobserver agreement (Fleiss kappa) of the m2ABQ classification of osteoporotic vertebral body fractures
Methodological detailsretrospective, fracture-enriched database, five independent raters, iterative annotation rounds with consensus sessions, Rules refined after consensus sessions held after each annotation round
- Retrospective
- Fracture-enriched database
- Five independent raters
- Iterative annotation rounds with consensus sessions
- Rules refined after consensus sessions held after each annotation round
Recommendations
As reported in the abstract
Interobserver agreement (Fleiss kappa) across annotation rounds
Fleiss kappa, presence vs absence of fracture (first to last round)
0.62 (0.56-0.68) to 0.70 (0.65-0.75)
Fleiss kappa, whole m2ABQ scale (first to last round)
0.29 (0.25-0.33) to 0.54 (0.51-0.58)
Original publication
m2ABQ—a proposed refinement of the modified algorithm-based qualitative classification of osteoporotic vertebral fractures. Osteoporos Int. Published 7 November 2022. doi:10.
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