1. EQA Autumn 2011 Update Dr Ken Swa National Clinical Lead
Diabetic Retinopathy Screening Collaborative
National Services Scotland

2. Summary of EQA Autumn 2011 98 % of graders completed all 100 images
Median centre sensitivity – 93% to 100% ( previous round % to 93.8%)
Median centre specificity – 84.8% to 95.7% (previous round 87.2% to 93.6%)
Overall median sensitivity / specificity – 95.3% / 91.3% (previous round – 90.0%/91.5% )

3. Summary of EQA 2011 Spring 2011 Autumn 2011 Sensitivity at least 80%
83.9%
92%
Specificity at least 80%
93%
91.0%
Sensitivity/Specificity at least 80%
78.2%
82.8%

4. EQA Spring 2011

5. EQA Autumn 2011

6. ROC Chart Spring 2011

7. ROC Chart Autumn 2011

8. EQA Trends

9. EQA - Message EQA image grading is NOT live grading
Everyone should grade EQA images like live grading
It aims to reflect image grading quality of all graders
There is room for improvement for ALL
Education , training and feedback is key
Outliers need to be handled sensitively and in confidence
DRS need to develop a robust and consistent national policy