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Table 4 Comparing mean VA readings in each visit between 1000 and 5000 silicone oil groups

From: Characteristics, fates and complications of long-term silicone oil tamponade after pars plana vitrectomy

Visit

Silicon Oil type

Range

Interquartile Range

Median

U

Sig. (2-tailed)

Effect size (Cohen’s d)

VA Baseline

1000

0.60

0.03

0.05

770.50

.93

0.019

5000

0.40

0.11

0.04

VA Day 1

1000

0.50

0.05

0.02

681.50

.70

0.086

5000

0.20

0.05

0.02

VA Week 1

1000

0.50

0.03

0.05

647.00

.71

0.083

5000

0.32

0.03

0.05

VA Month 1

1000

0.50

0.07

0.05

609.50

.82

0.053

5000

0.25

0.04

0.05

VA Month 4

1000

0.30

0.08

0.05

346.50

.12

0.401

5000

0.16

0.03

0.05

VA Last visit

1000

0.30

0.08

0.02

530.50

.45

0.179

5000

0.20

0.03

0.02

  1. U Mann-Whitney U test value
  2. VA Visual Acuity