Table 1 Baseline characteristics of patients with chronic branch retinal vein occlusion.

From: Association between capillary congestion and macular edema recurrence in chronic branch retinal vein occlusion through quantitative analysis of OCT angiography

 

Total group

N = 76

Non-recurrence group

N = 54

Recurrence group

N = 22

p value

Age (years)

63.5 ± 10.9

61.8 ± 9.8

67.8 ± 12.3

0.028a

Male/female (N)

38/38

26/28

12/10

0.610b

Right/left (N)

39/37

24/30

15/7

0.060b

Hypertension (N)

48

34

14

1.000b

Diabetes mellitus (N)

10

5

5

0.142c

Dyslipidemia (N)

5

5

0

0.313c

Period from initial visit to the baseline (months)

16.1 ± 7.0

14.1 ± 5.3

20.9 ± 8.3

< 0.001a

Mean baseline BCVA (logMAR)

0.218 ± 0.241

0.187 ± 0.216

0.295 ± 0.284

0.138a

Mean baseline CSMT (μm)

226.4 ± 33.3

224.1 ± 32.8

232.2 ± 34.7

0.379a

Period from initial visit to first anti-VEGF injection (days)

9.5 ± 5.8

9.4 ± 6.0

9.6 ± 5.5

0.706a

Total number of intravitreal injections (N)

3.4 ± 3.2

2.4 ± 2.4

5.8 ± 3.7

< 0.001a

Anti-VEGF (N)

2.5 ± 2.1

2.0 ± 1.9

3.6 ± 2.2

0.002a

Steroid (N)

0.9 ± 2.3

0.4 ± 0.9

2.2 ± 3.8

0.005a

Sectorial scatter photocoagulation (N)

56

40

16

0.920b

Occlusion site

Superotemporal branch (N)

54

41

13

0.143b

Inferotemporal branch (N)

22

13

9

  1. BCVA best-corrected visual acuity, CSMT central subfield macular thickness, VEGF vascular endothelial growth factor.
  2. Bold font indicates a statistically significant difference (a p value < 0.05) between the non-recurrence and recurrence groups.
  3. aThe results of the Mann–Whitney U test.
  4. bThe results of Pearson chi-squared test.
  5. cThe results of the Fisher's exact probability test.
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