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Table 1 Characteristics of Patients with Diabetes Presenting to a Retina Clinic

From: Identification of population characteristics through implementation of the Comprehensive Diabetic Retinopathy Program

  Entire cohort Subsample: risk score 2
N = 2916 N = 1014
N or Mean % or SD Min Max N or Mean % or SD Min Max
Patient age Mean (SD) 64.05 14.29 13 99 62.79 13.89 17 98
Race N(%)
 Asian 134 4.60    39 3.85   
 Black, African American 431 14.78    198 19.53   
 White or Caucasian 2171 74.45    715 70.51   
 Unknown/other/mixed 180 6.17    62 6.11   
Sex N(%)
 Female 1365 46.81    467 46.06   
 Male 1551 53.19    547 53.94   
Ever smoked N (%)
 Yes 1287 44.14    415 40.93   
 No/unknown 1629 55.86    599 59.07   
Diabetic retinopathy N (%)
 Yes 1664 57.06    806 79.49   
 No 1252 42.94    208 20.51   
Diabetes type N(%)
 Type 1 356 12.21    143 14.10   
 Type 2 1883 64.57    736 72.58   
 Undefined 677 23.22    135 13.31   
Maximum microalbumin N(%)
  < 30 239 8.20    96 9.47   
30 186 6.38    159 15.68   
 Unknown 2491 85.43    759 74.85   
History of kidney diagnosis N(%)
 Yes 509 17.46    436 43.00   
 No/unknown 2407 82.54    578 57.00   
Duration of diabetes 10 years
 Yes 1404 48.15    885 87.28   
 No 1512 51.85    129 12.72   
Max patient’s BMI Mean (SD 33.46 7.96 17 81 34.02 8.39 17 81
Maximum systolic blood pressure Mean (SD) 141.91 22.86 80 237 152.71 22.7 87 237
Maximum diastolic blood pressure Mean (SD) 73.73 11.53 40 123 77.19 11.83 42 118
Maximum HbA1c Mean (SD) 8.01 1.80 4.30 15.70 8.68 2.01 4.70 15.70
Patient’s number of visits Mean (SD)a 3.91 3.70 1 27 4.85 4.11 1 25
  1. aFor the number of visits outcome a subcohort of patients who presented with at least 12 months of potential follow up has been evaluated (N = 1504 for the whole cohort; N = 634 for the subgroup of patients with risk score ≥ 2)