Sleep duration modifies the association between obstructive sleep apnea risk and glaucoma: evidence from the Korea National Health and Nutrition Examination Survey

Table 6 Relationship between sleep duration and intraocular pressure

Abnormal sleep (< 7 h or ≥ 9 h)	Unadjusted			Model 2			Model 3			Model 4
Abnormal sleep (< 7 h or ≥ 9 h)	β	95% CI	P value	β	95% CI	P value	β	95% CI	P value	β	95% CI	P value
Overall week	− 0.06	− 0.18–0.07	0.364	0.01	− 0.12–0.13	0.933	0.00	− 0.12–0.12	0.963	− 0.01	− 0.13–0.11	0.865
Weekday	− 0.06	− 0.19–0.06	0.315	− 0.01	− 0.13–0.11	0.854	− 0.01	− 0.13–0.11	0.828	− 0.03	− 0.15–0.09	0.621
Weekend	− 0.05	− 0.17–0.06	0.362	0.01	− 0.10–0.12	0.899	0.01	− 0.11–0.12	0.913	0.00	− 0.11–0.11	0.969

CI = confidence interval
Linear regression was applied to calculate β coefficients and 95% CIs. Adjustments were progressively included in Models 2–4
Model 2: Adjusted for gender and age
Model 3: Adjusted for variables in Model 2, with additional adjustments for smoking, drinking, physical activity, educational level, and income level
Model 4: Adjusted for variables in Model 3, with additional adjustments for metabolic syndrome, stress level, refractive error, and glaucoma treatment

ISSN: 2326-0254