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Table 4 Correlations among PRT test and the DEDa parameters

From: Validation of the phenol red thread test in a Chinese population

Parameters

n

Mean ± SDb/Median(P25,P75)

Spearman’s rho

P value

PRTc test-average (mm)

108

8.40 ± 3.14

-

-

Schirmer I test (mm)

108

6.00 (3.00,16.00)

0.385

 < 0.001

TMHd (mm)

108

0.201 ± 0.054

0.306

0.001

  1. aDED dry eye disease, bSD standard deviation, cPRT phenol red thread, dTMH tear meniscus height