Table 3 Discriminant validity of app-based and visually confirmed MBIs.

From: Clinical utility of maximum blink interval measured by smartphone application DryEyeRhythm to support dry eye disease diagnosis

MBIs

Non-DED

DED

P value

Total

n = 32

n = 51

n = 83

App-based MBI (iOS), s ± SD

12.2 ± 7.9

8.3 ± 5.3

0.021

9.8 ± 6.7

Visually confirmed MBI (iOS), s ± SD

12.3 ± 7.9

8.4 ± 5.2

0.018

9.9 ± 6.6

App-based MBI (Android), s ± SD

12.3 ± 7.3

8.9 ± 5.3

0.028

10.2 ± 6.3

Visually confirmed MBI (Android), s ± SD

12.3 ± 7.3

9.0 ± 6.3

0.031

10.3 ± 6.3

  1. P values were determined using two-tailed Student’s t test for continuous variables and χ2 test for categorical variables. DED, dry eye disease; SD, standard deviation; MBI, maximum blink interval; iOS, iPhone operating system.
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