Passive Smoking as a Risk Factor of Dry Eye in Children

Table 4

Correlations between score of dry eye with smoking parameters in dry eye group.

	Dry eye score
	𝑟	𝑃
Age	−0.21	𝑃=0.16
Body mass index	0.13	𝑃=0.39
Number of cigarettes per day	0.74	𝑃<0.0001
Duration of smoking exposure	0.68	𝑃<0.0001
Cotinine	0.84	𝑃<0.0001
Cotinine/creatinine ratio	0.88	𝑃<0.0001