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Table 1 Clinical data and retinal oximetry values of the groups studied

From: Shifts in retinal vessel diameter and oxygen saturation in Chinese type 2 diabetes mellitus patients

Group

Normal (n = 78)

DM, no DR (n = 29)

NPDR (n = 40)

PDR (n = 30)

Age

55.59 ± 7.88

58.79 ± 10.08

60.53 ± 6.76

55.83 ± 6.66

Sex (M/F)

28/50

14/15

15/25

16/14

Finger_satO2

97.30 ± 1.27

97.35 ± 1.08

96.98 ± 4.95

97.50 ± 0.98

OPPm

49.42 ± 7.71

51.06 ± 6.59

52.75 ± 9.47

54.57 ± 8.60

BCVA

0.78 ± 0.28

0.64 ± 0.27

0.45 ± 0.30

0.28 ± 0.21

Diabetes-duration (yrs)

-

6.59 ± 4.12

8.9 ± 5.49

11.93 ± 4.65

A_diameter (pixels)

13.47 ± 1.19

13.2 ± 1.12

13.03 ± 1.46

11.82 ± 1.47**

V_diameter (pixels)

16.80 ± 1.68

17.0 ± 1.62

17.28 ± 1.84

17.66 ± 1.44*

AVR

0.81 ± 0.07

0.78 ± 0.07

0.76 ± 0.07**

0.67 ± 0.07**

A_SatO2(%)

95.00 ± 4.78

97.45 ± 5.76

100.02 ± 7.48**

112.56 ± 10.41**

V_SatO2(%)

58.50 ± 3.76

61.48 ± 7.52

65.98 ± 6.23**

68.06 ± 6.00**

AV_difference (%)

36.49 ± 4.35

35.97 ± 6.41

34.03 ± 6.26

44.5 ± 10.07**

  1. BCVA was recorded by equivalent decimal values. Diameter conversion factor: 1 pixel ≈ 9.3 μm
  2. *p < 0.05, **p < 0.01