Table 5. Association between sleep disorders and health-related QoL in cancer patients (n=333)

Sleep disorders	No.	SF-36 summary scores
		PCS score	P-value	MCS score	P-value
		Mean±SD		Mean±SD
Restless legs syndrome
Yes	77	31.30±8.38	<0.001	39.10±7.63	0.120
No	256	37.50±9.44		40.77±8.39
Insomnia
Yes	98	33.51±9.13	0.002	38.46±7.67	0.006
No	235	37.13±9.56		41.19±8.36
Parasomnia
Yes	95	36.23±9.82	0.842	38.20±8.82	0.002
No	238	36.00±9.48		41.27±7.85
Epworth Sleepiness Scale
Yes	123	32.05±7.19	<0.001	38.22±7.47	<0.001
No	210	38.42±10.00		41.65±8.42
Sleep respiratory disorders
Yes	116	34.30±8.36	0.009	38.67±7.58	0.004
No	217	37.01±10.04		41.30±8.45
Bruxism
Yes	54	31.68±7.92	<0.001	36.79±7.31	<0.001
No	279	36.92±9.63		41.08±8.24
Sleep quality
Good sleepers (≤5 points)	136	40.20±10.08	<0.001	43.54±8.25	<0.001
Poor sleepers (>5 points)	197	33.21±8.06		38.20±7.52

QoL, quality of life; SF-36, Short Form-36; PCS, physical component summary; MCS, mental component summary.