TABLE 4.

Dry eye disease (DED)-related parameters in good and poor sleep groups of OSA cases and relevant controls.

	Control			OSA
	Good sleep (n = 67)	Poor sleep (n = 58)	P	Good sleep (n = 45)	Poor sleep (n = 80)	P
DED (n, %)	31 (46.3)	22 (37.9)	0.370	17 (37.8)	54 (67.5)	0.002
Schirmer I test (mm/5 min)	15.69 ± 6.97	15.52 ± 6.36	0.889	15.81 ± 5.34	15.72 ± 7.52	0.001
Oxford corneal staining score	0.76 ± 0.95	0.62 ± 1.08	0.444	0.09 ± 0.29	0.43 ± 0.85	<0.001
OSDI	15.71 ± 9.16	16.16 ± 11.05	0.806	12.31 ± 6.41	19.13 ± 14.36	<0.001
f-NITBUT (s)	7.29 ± 2.44	7.32 ± 2.32	0.948	7.87 ± 1.14	6.53 ± 2.00	<0.001
av-NITBUT (s)	10.31 ± 3.03	10.83 ± 3.06	0.342	11.11 ± 1.31	9.87 ± 2.31	<0.001
TMH (mm)	0.37 ± 0.07	0.39 ± 0.06	0.320	0.42 ± 0.05	0.37 ± 0.07	<0.001
Loss on upper eyelid meibography (%)	18.00 ± 8.44	17.62 ± 8.43	0.804	15.28 ± 3.03	21.24 ± 9.55	<0.001
Loss on lower eyelid meibography (%)	19.32 ± 8.25	19.70 ± 8.80	0.806	17.09 ± 3.80	21.96 ± 8.90	<0.001

Comparison among groups was calculated using unpaired t-test and chi-square exact test. The comparisons with statistical differences were marked in bold.