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Table 4 Pooled estimates for BCVA change from baseline for PDT versus anti-VEGF

From: Photodynamic therapy versus anti-vascular endothelial growth factor agents for polypoidal choroidal vasculopathy: A meta-analysis

Outcome of Interest

Studies (n)

WMD/OR (95 % CI)

Test for Overall Effect

Study Heterogeneity

χ2

p

I2

LogMAR Change in both Groups (PDT group vs anti-VEGF group) (3mo)

Design

      

 All trials

5

−0.02 (−0.12, 0.08)

Z =0.45, P =0.653

6.77

0.148

40.9 %

 Retro

4

−0.05 (−0.18, 0.07)

Z =0.85, P =0.407

5.10

0.165

41.2 %

 RCT

1

0.05 (−0.07, 0.17)

Z =0.83, P =0.407

 

-

 

Anti-VEGF agents

      

 All trials

5

−0.02 (−0.12, 0.08)

Z =0.45, P =0.653

6.77

0.148

40.9 %

 Ranibizumab

3

−0.03 (−0.20, 0.13)

Z =0.39, P =0.694

6.71

0.035

70.2 %

 Non- Ranibizumab

2

−0.02 (−0.16, 0.12)

Z =0.32, P =0.749

0.02

0.859

0.00 %

LogMAR Change in both Groups (PDT group vs anti-VEGF group) (6mo)

Design

      

 All trials

4

0.02 (−0.12, 0.16)

Z =0.23, P =0.817

7.60

0.055

60.5 %

 Retro

3

−0.03 (−0.22, 0.17)

Z =0.25, P =0.800

5.74

0.057

65.2 %

 RCT

1

0.10 (−0.02, 0.22)

Z =1.66, P =0.097

 

-

 

Anti-VEGF agents

      

 All trials

4

0.02 (−0.12, 0.16)

Z =0.23, P =0.817

7.60

0.055

60.5 %

 Ranibizumab

3

0.02 (−0.15, 0.20)

Z =0.27, P =0.787

7.21

0.027

72.3 %

 Non- Ranibizumab

1

−0.03 (−0.27, 0.21)

Z =0.25, P =0.806

 

-

 

LogMAR Improvements in both Groups (PDT group vs anti-VEGF group) (12mo)

Design

      

 All trials

4

0.02 (−0.15, 0.18)

Z =0.20, P =0.839

10.43

0.015

71.2 %

 Retro

3

−0.04 (−0.24, 0.16)

Z =0.40, P =0.690

5.99

0.050

66.6 %

 RCT

1

0.15 (0.03, 0.27)

Z =2.49, P =0.013

 

-

 

Anti-VEGF agents

      

 All trials

4

0.02 (−0.15, 0.18)

Z =0.20, P =0.839

10.43

0.015

71.2 %

 Ranibizumab

3

0.03 (−0.17, 0.24)

Z =0.31, P =0.760

9.63

0.009

79.0 %

 Non- Ranibizumab

1

−0.05 (−0.29, 0.19)

Z =0.41, P =0.682

 

-

 

LogMAR Improvements in both Groups (PDT group vs anti-VEGF group) (24mo)

 All trials

2

−0.17 (−0.90, 0.55)

Z =0.47, P =0.638

19.1

P < 0.001

94.8 %

LogMAR Change as Categorical Variable

Proportion of eyes with improved vision

 final visit

5

1.24 (0.54, 2.85)

Z =0.51, P =0.610

7.47

0.113

46.4 %

Proportion of eyes with deteriorated vision

 final visit

5

1.40 (0.42, 4.73)

Z =0.55, P =0.586

11.23

0.024

64.4 %

Proportion of eyes with stable vision

 final visit

5

0.56 (0.29, 1.10)

Z =1.67, P =0.094

6.82

0.145

41.4 %

  1. PDT photodynamic therapy; VEGF vascular endothelial growth factor; WMD weighted mean differences; OR odds ratio; CI confidence interval; Retro retrospective comparative study; RCT prospective randomized controlled trial