Table 2

Prevalence of diabetic retinopathy (DR; N=174 532)

DR gradingNPer cent95% CI (%)
Non-STDR147 63984.684.4 to 84.8
 R0M096 69755.455.2 to 55.6
 R1M050 94229.229.0 to 29.4
STDR17 1169.89.7 to 9.9
 R2M019881.11.1 to 1.2
 R3M01740.10.1 to 0.1
 R0M11<0.01
 R1M111 2936.56.4 to 6.6
 R2M132451.91.8 to 1.9
 R3M14150.20.2 to 0.3
Ungradable97775.65.5 to 5.7
  • M0, no maculopathy; M1, maculopathy; R0, no diabetic retinopathy; R1, background diabetic retinopathy; R2, preproliferative diabetic retinopathy; R3, proliferative diabetic retinopathy; STDR, sight threatening diabetic retinopathy.