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Table 1 Comparison between pre and postoperative data

From: Evaluation of implanted perforated lacrimal punctal plugs using anterior segment optical coherence tomography

Variable

Grade

Preoperative

Nā€‰=ā€‰54 (eyes)

Postoperative

Nā€‰=ā€‰54 (eyes)

P value

TMHĀ (Āµm)

Range

632ā€“1420

137ā€“959

<ā€‰0.001*

Meanā€‰Ā±ā€‰SD

936.6ā€‰Ā±ā€‰182.3

319.1ā€‰Ā±ā€‰204.7

Median

875

253

IQR

810.3ā€“1019.3

209.8ā€“311.5

TMAĀ (mm2)

Range

0.11ā€“0.73

0.01ā€“0.5

<ā€‰0.001*

Meanā€‰Ā±ā€‰SD

0.42ā€‰Ā±ā€‰0.14

0.07ā€‰Ā±ā€‰0.1

Munk grade

Grade 0

0 (0%)

6 (11.1%)

<ā€‰0.001*

Garde 1

0 (0%)

27 (50%)

Grade 2

0 (0%)

14 (25.9%)

Grade 3

26 (48.1%)

5 (9.3%)

Grade 4

28 (51.9%)

2 (3.7%)

Postoperative Munk change

Stationary

5 (9.3%)

Improved

49 (90.7%)

  1. Paired samples t-test for parametric quantitative data between the two occurrences
  2. Wilcoxon signed rank test for non-parametric quantitative data and ordinal qualitative data between the two occurrences
  3. TMH tear meniscus height; TMA tear meniscus area;Ā IQRĀ interquartile range
  4. *Significant level at Pā€‰<ā€‰0.05