Table 1

List of predictors chosen by NGT by number of votes and voting frequency

PredictorVoting frequencyProportion voted (total n=44) (%)*
1HbA1c3170
2Duration of diabetes2455
3Retinopathy level1739
4Townsend score1636
5Smoking (lifestyle)1227
6Race1125
7Proliferative DR1125
8DNA†1023
9Nephropathy920
10Hypertension920
11Maculopathy818
12Pregnancy†716
13Comorbidities†716
14Exercise/physical activity614
‘15Type of DM511
16BMI511
17eGFR49
18Chronic renal disease49
19Rapid reduction of blood sugar (early worsening)†49
20Dyslipidaemia37
21Psychiatric illness37
22Visual acuity score25
23DBP25
24Only eye†25
25Age at diagnosis12
26Chronic infection†12
27Preproliferative†12
28Neuropathy12
29Age12
30Statins12
31Insulin12
32Gender12
33Diet†12
  • *Voting frequency in percentages arranged in order of high to low. NGT selected 25 out of 78 candidate predictors list.

  • †Eight new predictors were added by NGT for a total of 33 predictors.

  • BMI, body mass index; DBP, diastolic blood pressure; DM, diabetes mellitus; DNA, did not attend; DR, diabetic retinopathy; eGFR, estimated glomerular filtration rate; HbA1c, glycated haemoglobin; NGT, nominal group technique.