Table 3.
Descriptive statistics of the first break up time in the left eye in patients with and without Demodex infestation and results of the t-test with Cochran–Cox correction.
| Group | N | NIBUT (seconds) First break up time, left eye |
t | df | p | ||||
|---|---|---|---|---|---|---|---|---|---|
| M ± SD | Variance | Median | Q25–Q75 | Min–max | |||||
| Demodex positive | 157 | 8.95 ± 6.11 | 37.29 | 7.14 | 4.46–10.71 | 1.53–24.48 | −8.08 | 315.2 | < 0.0001 |
| Demodex negative | 162 | 14.80 ± 6.80 | 46.18 | 13.38 | 8.99–22.94 | 2.68–24.09 | |||
Arithmetic mean (M), standard deviation (SD), interquantile Range (Q25–Q75), degrees of freedom (df), t-value (t), p-value (p).