Table 3

Final list of candidate predictors

GroupPredictors
1Ocular featuresPresence and DR grade
  1. Proliferative DR

  2. Preproliferative DR*

  3. Maculopathy

2Visual acuity score
3SociodemographicAge at STR diagnosis
4Age
5Race
6Gender
7Social deprivation score
8Diabetes characteristicsType of DM
9Duration of DM >10 years
10Biochemical parametersHbA1c
11eGFR
12Total serum cholesterol
13Physical examinationSBP
14DBP
15Diabetes treatmentStatin
16Insulin
17NGT*Pregnancy
18Early worsening
19Frequent DNA
  • *Preproliferative DR, new from NGT is moved up to appear with the rest of DR categories, 4 condensed into 1, and thus 21 predictors condensed into 19. Also ‘age at diagnosis’ was specified to ‘age at STR diagnosis’ to conform with our target population of referable DR.

  • DBP, diastolic blood pressure; DM, diabetes mellitus; DR, diabetic retinopathy; eGFR, estimated glomerular filtration rate; HbA1c, glycated haemoglobin; NGT, nominal group technique; SBP, systolic blood pressure; STR, sight-threatening retinopathy.