Table 1

Characteristics of the study population

VariableCategoryStatisticDiabetes vs. nondiabetesDiabetes w/DR vs. diabetes w/o DRPDR vs. NPDR
DiabetesNondiabetesStandard Diff.Diabetes w/ DRDiabetes w/o DRStandard Diff.PDRNPDRStandard Diff.
SexFemalen (%)27,581 (50.5)27,581 (50.5)0.004,089 (57.4)4,089 (57.4)0.001,147 (53.1)1,147 (53.1)0.00
Malen (%)27,035 (49.5)27,035 (49.5)3,030 (42.5)3,030 (42.5)987 (46.2)987 (46.2)
Age, yearsMean ± SD62.3 ± 9.062.3 ± 9.00.0166.4 ± 7.966.4 ± 7.90.00163.3 ± 8.163.3 ± 8.10.00
50 < age ≤ 60n (%)26,109 (47.8)26,154 (47.9)0.111,632 (22.9)1,624 (22.8)0.02856 (40.1)862 (40.3)0.00
60 < age ≤ 70n (%)17,219 (31.5)17,148 (31.4)3,181 (44.6)3,195 (44.8)804 (37.6)797 (37.3)
age >70n (%)11,288 (20.6)11,314 (20.7)2,306 (32.3)2,300 (32.3)474 (22.2)475 (22.2)
CCI totalMean ± SD2.8 ± 1.02.7 ± 0.90.0444.8 ± 4.74.8 ± 4.704.4 ± 1.94.4 ± 1.90.00
Hypertensionn (%)28,687 (52.5)15,259 (27.9)0.525,331 (74.8)4,637 (65.1)0.211,570 (73.5)1,567 (73.4)0.00
Hyperlipidemian (%)17,270 (31.6)6,871 (12.5)0.473,706 (52.0)2,994 (42.0)0.201,106 (51.8)1,237 (57.9)−0.12
  • Diff., difference; w/o, without; w/, with.