Table 4. Estimation of direct and indirect effects of depression on dry eye disease through poor sleep quality: a mediation analysis.

Pathway	Coef.	95% CI	P value	OR	95% CI
Direct effect:Depression → DED	0.12	0.02, 0.23	0.021	1.66	1.06, 2.58
Indirect effect:Depression → poor sleep quality → DED	0.06	0.04, 0.09	<0.001	1.32	1.18, 1.49
Total effect	0.19	0.04, 0.09	<0.001	2.20	1.41, 3.41

DED, dry eye disease.