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Interrater variation in scoring radiological discrepancies.

B Mucci¹, H Murray, A Downie

¹Department of Radiology, South Glasgow University Hospitals, Southern General Hospital, Glasgow, Scotland, UK. Brian.Mucci@ggc.scot.nhs.uk

The British Journal of Radiology

|July 9, 2013

Summary

This summary is machine-generated.

Radiologists show poor agreement when scoring discrepancies, with a mean Fleiss' kappa of 0.17. This suggests issues with the scoring system or the need for enhanced radiologist training in discrepancy evaluation.

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Area of Science:

Medical Imaging
Radiology
Clinical Governance

Background:

Discrepancy meetings are crucial for clinical governance in radiology.
The Royal College of Radiologists recommends a scoring scale (0-3) for discrepancies.
Observed variations in radiologist scoring prompted this investigation.

Purpose of the Study:

To quantify the variation in scoring among radiologists during discrepancy meetings.
To assess the interrater reliability of the current radiology discrepancy scoring system.

Main Methods:

Collected scores from six discrepancy meetings, totaling 161 scored events.
Employed Fleiss' kappa statistic to measure interrater agreement.
Included only cases rated by all participating radiologists.

Main Results:

The number of cases per meeting ranged from 18 to 31 (mean 27).
The number of raters per meeting ranged from 11 to 16 (mean 14).
Fleiss' kappa values ranged from 0.12 to 0.20, with a mean of 0.17, indicating poor agreement.

Conclusions:

The study found poor interrater agreement among radiologists in scoring discrepancies (mean kappa 0.17).
This low agreement suggests potential issues with the scoring system or a need for standardized training.
Radiology discrepancy scoring is highly subjective, highlighting the need for improved consistency.