Table 5.

 Overall grades of retinopathy assigned for patients screened

Overall level of retinopathy or maculopathy	Number of patients (%) (95% CI)
R0: No diabetic retinopathy	3485 (62.5) (61.2 to 63.7)
R1: Mild diabetic retinopathy	1116 (20.0) (18.9 to 21.0)
R2: Moderate diabetic retinopathy	17 (0.3) (0.2 to 0.5)
M1: Observable maculopathy	111 (2) (1.7 to 2.4)
M2: Referable maculopathy	131 (2.3) (2.0 to 2.8)
R3: Severe diabetic retinopathy	36 (0.6) (0.5 to 0.9)
R4: Proliferative diabetic retinopathy	18 (0.3) (0.2 to 0.5)
R6: Image is of a quality inadequate for grading	661 (11.9) (11.0 to 12.7)