Table 4.

Comparison of sleep quality scores among participants with CLOCK gene (rs1801260) (n = 120).

	TT	TC	CC	χ 2	p
PSQI score	10.04 ± 3.83a	6.61 ± 3.76	6.28 ± 3.41	56.627	<0.001
Subjective sleep quality	1.64 ± 0.92b	1.00 ± 0.83	1.17 ± 0.99	30.655	<0.001
Time of falling asleep	2.37 ± 0.74c	1.60 ± 0.98	1.39 ± 0.61	55.460	<0.001
Sleeping time	1.82 ± 0.89d	1.33 ± 0.99	1.33 ± 0.77	18.632	<0.001
Sleep efficiency	0.94 ± 0.83e	0.34 ± 0.76	0.17 ± 0.51	55.881	<0.001
Sleep disorders	1.30 ± 0.69	1.06 ± 0.69	1.00 ± 0.69	9.065	0.011
Hypnotic drugs	0.43 ± 0.81	0.21 ± 0.51	0.17 ± 0.38	5.430	0.066
Daytime dysfunction	1.54 ± 0.91f	1.07 ± 0.88	1.06 ± 1.11	19.097	<0.001

Note: the results of post hoc tests, ^ap < 0.001, ^bp = 0.05, ^cp < 0.001, ^dp = 0.048, ^ep < 0.001, and ^fp = 0.05.