The Association between Dry Eye Disease and Physical Activity as well as Sedentary Behavior: Results from the Osaka Study

Table 3

Pearson’s correlation between International Physical Activity Questionnaire score and the clinical findings of dry eye disease.

Dry eye clinical findings	Mean ± SD	Pearson’s correlation coefficient	value
Ocular surface staining score	1.1 ± 1.3	−0.153	0.002
Schirmer’s test value (mm)	18.9 ± 11.7	0.011	0.822
BUT (s)	4.1 ± 2.6	0.117	0.012

BUT: tear film break-up time and SD: standard deviation.