Table 2 Mean values and coefficients of variance for the PRT tests, TMH assessment, and Schirmer I test
From: Validation of the phenol red thread test in a Chinese population
Parameters | n (eyes) | Mean ± SDa/ Median(P25,P75) | CVb (%) |
|---|---|---|---|
PRT test-first (mm) | 108 | 8.00 (5.00,11.00) | 43.04 |
PRT test-second (mm) | 108 | 8.00 (6.00,11.00) | 43.31 |
PRT test-third (mm) | 108 | 8.00 (6.00,10.00) | 39.36 |
PRT test-average (mm) | 108 | 8.40 ± 3.14 | 37.38 |
TMH (mm) | 108 | 0.201 ± 0.054 | 26.87 |
Schirmer I test (mm) | 108 | 6.00 (3.00,16.00) | 101.06 |