Table 2 Odds ratios and 95% confidence intervals for the association between NAION and presumed sleep apnoea.

	Cases n (%)	Controls n (%)	Crude OR (95% CI)	Adjusted* OR (95% CI)	Adjusted** OR (95% CI)
Sleep apnoea
No	68 (93.2)	70 (95.9)	1.82 (0.87, 3.79)	2.82 (0.62, 12.94)	2.62 (1.03, 6.60)
Yes	22 (30.1)	13 (17.8)

*Adjusted for race, smoking, alcohol consumption, BMI, coronary artery disease, high blood pressure, high cholesterol, diabetes, COPD, glaucoma, migraine headaches, stroke, cardiac arrhythmia, myocardial infarction. **Adjusted for glaucoma, high blood cholesterol and smoking.