Poor Sleep Quality Is the Risk Factor for Central Serous Chorioretinopathy

Table 4

Subscale of sleep features in CSC and controls.

	CSC		Controls
		%		%
Subjective sleep quality
0-very good	14	10.4	30	22.4	<0.001 (Kruskal–Wallis H test)
1-fairly good	74	55.2	86	64.2
2-fairly bad	24	17.9	18	13.4
3-very bad	22	16.4	0	0
Sleep latency >15 min	116	86.6	86	64.2	<0.001 (chi-square test)
Sleep duration
>7 h	46	32.8	94	70.1	<0.001 (Kruskal–Wallis H test)
6-7 h	42	31.3	28	20.9
5-6 h	28	20.9	6	4.5
<5 h	18	13.4	6	4.5
Sleep efficiency
≥85%	66	49.3	110	82.1	<0.001 (Kruskal–Wallis H test)
75%–84%	30	22.4	16	11.9
65%–74%	20	14.9	2	1.5
<65%	18	13.4	6	4.5

CSC, central serous chorioretinopathy.