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

Summary of EQA Autumn 2011 98 % of graders completed all 100 images Median centre sensitivity – 93% to 100% ( previous round - 82.5 % 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% )

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%

EQA Spring 2011

EQA Autumn 2011

ROC Chart Spring 2011

ROC Chart Autumn 2011

EQA Trends

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