Table 1 of Payne, Mol Vis 2011; 17:2318-2324.


Table 1. Clinical characteristics of the four study groups.


Clinical characteristic
No DM
(n=99)
No BDR
(n=42)
NPDR
(n=41)
PDR
(n=43)

p-value
Age (years)* 61.5±12.6 62.4±11.2 68.4±9.9 59.8±11.8 0.708
Race: Black 48 (49%) 21 (50%) 22 (54%) 23 (54%) 0.964
White 49 (49%) 19 (45%) 18 (44%) 19 (44%)  
Asian 2 (2%) 2 (5%) 1 (2%) 1 (2%)  
Sex: Male 49 (49%) 22 (52%) 22 (54%) 22 (51%) 0.971
Body Mass Index* (kg/m2) 28.4±7.1 31.7±9.6 31.3±6.6 33.0±6.7 <0.001
Duration of Diabetes (years)* - 7.5±7.7 19.2±11.1 22.2±10.5 <0.001
Hemoglobin A1c* 5.8±0.4 7.5±1.9 7.4±1.2 8.1±1.8 <0.001
Insulin Usage - 10 (24%) 30 (73%) 31 (72%) <0.001
Macrovascular Disease 13 (13%) 6 (14%) 14 (33%) 19 (44%) <0.001
Hypertension 56 (57%) 28 (67%) 39 (95%) 40 (93%) <0.001
Serum Creatinine* (mg/dl) 0.99±0.64 0.92±0.28 1.90±1.85 2.50±2.78 <0.001
Estimated GFR* (ml/min/1.73m2) 82.22±24.01 89.00±29.76 58.32±31.78 47.70±29.87 <0.001