Table 2a. Clinician grade × imaging-only grade cross-tabulation (κ=0.386).

	Imaging only grade				Total
	No DR	Mild NPDR	Mod–severe NPDR	Prolif DR
Clinician grade
No DR	120	135	31	3	289
Mild NPDR	79	591	352	22	1044
Moderate–severe NPDR	5	87	360	48	500
Proliferative DR	2	8	29	103	142
Total	206	821	772	176	1975