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Table 3 RCD (%) in diabetic patients grouped by major risk factors

From: Associated risk factors in the early stage of diabetic retinopathy

  Percentage Age SRCL DRCL
  NDR MDR
Control     43.9 ± 1.8 52.6 ± 3.0
Diabetes      
Age < 55y 81.5% (53) 18.5% (12) 42.4 ± 3.4c 50.7 ± 4.6a
Age > 55y 60.7% (37) 39.3% (24) 41.6 ± 2.4c 47.1 ± 6.8c
P Value     0.064 < 0.001
HbA1c < 7% 82.0% (41) 18.0% (9) 53.0 ± 12.5 42.4 ± 3.1c 50.3 ± 5.0a
HbA1c > 7% 63.9% (49) 36.1% (2) 55.8 ± 11.8 41.9 ± 2.5c 47.8 ± 6.7c
P Value    0.233 0.335 0.010
LDL-C < 3.1 mmol/L 71.6% (58) 28.4% (23) 55.1 ± 12.3 42.5 ± 2.6c 49.3 ± 5.5c
LDL-C > 3.1 mmol/L 68.0% (17) 32.0% (8) 51.2 ± 13.3 41.4 ± 2.8c 47.7 ± 7.6c
P Value    0.179 0.035 0.168
BUN < 8.2 mmol/L 71.0% (66) 29.0% (27) 54.4 ± 11.7 42.3 ± 2.6c 49.3 ± 5.8c
BUN > 8.2 mmol/L 60.0% (3) 40.0% (2) 53.2 ± 18.8 40.1 ± 2.7c 42.4 ± 10.7c
P Value    0.833 0.033 0.002
  1. RCD = retinal capillary density; Control = control eyes; NDR = diabetic patients with no DR; MDR = diabetic patients with mild DR; SRCL = superficial retinal capillary layer; DRCL = deep retinal capillary layer; HbA1c = glycosylated hemoglobin A1c; LDL-C = low-density lipoprotein cholesterol; BUN = blood urea nitrogen
  2. One-way ANOVA P values between diabetic groups and control group: a represents < 0.05; b represents < 0.01; c represents < 0.001. One-way ANOVA P values among subgroups of diabetes patients: bold P-value represents < 0.05