Table 6 The Effect of HY and Non-HY Artificial Tear preparations on TBUT: Meta-Analytic Data of RCTs.

From: Sodium Hyaluronate in the Treatment of Dry Eye Syndrome: A Systematic Review and Meta-Analysis

Study

No. of subjects in HY arm

No. of subjects in Non-HY arm

Total

SMD

SE

95% CI

t

P

Weight (%)

Fixed

Random

Baeyens et al.6

198

374

572

0.303

0.0882

0.129 to 0.476

  

51.72

12.65

Baudouin et al.7

29

37

66

−0.00567

0.245

−0.495 to 0.484

  

6.70

11.61

Lee et al.9

64

66

130

−0.283

0.175

−0.630 to 0.0634

  

13.10

12.17

Benellli et al.10

20

40

60

−3.652

0.429

−4.512 to −2.793

  

2.19

9.71

Sanchez et al.11

15

14

29

−1.657

0.422

−2.522 to −0.792

  

2.26

9.79

Brignole et al.14

10

11

21

−0.515

0.427

−1.408 to 0.378

  

2.21

9.74

Iester et al.18

58

55

113

0.245

0.188

−0.127 to 0.617

  

11.44

12.08

Laflamme et al.21

12

24

36

−0.363

0.348

−1.071 to 0.345

  

3.32

10.59

Nelson et al.22

40

30

70

0.0557

0.239

−0.421 to 0.532

  

7.05

11.66

Total (fixed effects)

446

651

1097

0.0102

0.0635

−0.114 to 0.135

0.161

0.872

100.00

100.00

Total (random effects)

446

651

1097

−0.566

0.271

−1.099 to −0.0336

−2.086

0.037

100.00

100.00

Test for heterogeneity

Q

14.4555

DF

6

Significance level

P = 0.0249

I2 (inconsistency)

58.49%

95% CI for I2

4.19 to 82.02

  1. HY = Sodium Hyaluronate; SMD = Standard Mean Deviation; SE = Standard Error; CI = Confidence Interval.