Table 3.

Data and comparison of subgroups with diabetic retinopathy

Subgroups	Sex (M/F)	Age (years)	VEGF (pg/ml)	Mann-Whitney U Test (Subgroup VEGF comparison)
C1(CSDME-) N = 14	5/8	64.1 ± 10	113.7 ± 49,6 (43.3 – 185.7)	U = 53.000 Two tailed P = 0.065
C2 (CSDME+) N = 13	4/8	64 ± 6.9	154.4 ± 61.32 (50.8 – 279)
D1 (ACTIVE PDR) N = 10	6/4	68 ± 9.9	466.18 ± 242.84* (229.6 – 836.1)	U = 4.000 Two tailed P = 0.001
D2(QUIESCENT PDR) N = 9	2/6	62.9 ± 9.8	143.12 ± 66.86* (83 – 244.6)

Values are expressed as mean ± standard deviation, Statistically significant differences are indicated with an asterisk, CSDME: clinically significant diabetic macular edema, PDR: proliferative retinopathy