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Table 1 Retinal vessel tortuosity rated by 5 experts in the first round using a four-grade scale

From: Retinal vascular tortuosity assessment: inter-intra expert analysis and correlation with computational measurements

Grading E1R1 E2R1 E3R1 E4R1 E5R1
0:none 34 10 21 20 31
1:mild 19 29 23 25 18
2:moderate 7 20 16 12 11
3:severe 0 1 0 3 0