Research Article
Passive Smoking as a Risk Factor of Dry Eye in Children
Table 2
Age, body mass index, and smoking parameters between children with dry eye compared to those without dry eye.
| | Parameter | Nondry eye group (32) | Dry eye group (80) | | | | MeanāāSD | MeanāāSD |
| | Age (years) | 7.91 2.63 | |
ā1.35
|
0.19
| | Body mass index | | |
ā0.22
|
0.83
| | Number of cigarettes per day | | |
5.40
| <0.0001 | | Duration of smoking exposure (hours /day) | | |
8.45
| <0.0001 | | Urinary cotinine levels (Ī¼g/L) | | |
14.22
| <0.0001 | | Urinary cotinine/creatinine ratio (ng/mg) | | |
14.62
| <0.0001 |
|
|
