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Table 2 Clinical characteristics of patients grouped according to the presence of DR

From: Vascular endothelial growth factor +405G/C polymorphism as a predictor of diabetic retinopathy

 RetinopathyNo retinopathyP value
No.%No.%
Gender
 Male8074.12825.90.430
 Female11069.64830.4
Age
 < 30 years3056.62343.40.004
 30–40 years4365.22334.8
 41–60 years10478.22921.8
 > 60 years1392.917.1
Education
 Illiterate12173.34426.70.343
 Middle3763.82136.2
 High3274.41125.6
Duration of diabetes
 ≤ 10 years4153.23646.8< 0.001
 11–20 years6577.41922.6
 > 20 years8480.02120.0
Control of diabetes
 Controlled6451.66048.4< 0.001
 Uncontrolled12688.71611.3
Family history of DR
 Positive3782.2817.80.039
 Negative6665.33534.7
 Unknown120 patients did not know
History of Cons.
 Positive2764.31535.70.246
 Negative16372.86127.2
Hypertension
 No11468.35331.70.034
 Yes5881.71318.3
IHD
 No16972.86327.20.737
 Yes466.2233.3
Nephropathy
 No15971.36428.70.198
 Yes1386.7213.3
Neuropathy
 No8869.83830.20.375
 Yes8475.02825.0