Table 1.

Sleep disorders in CFS and non-fatigued controls

Sleep Disorders†	CFS (35)	NF (40)	p*
Obstructive Sleep Apnea (borderline)	3 (8%)	3 (7%)	/
Periodic Limb Movements	7 (20%)	8 (20%)	NS
Insufficient Sleep Syndrome	1 (2%)	0	NS
Delayed Sleep Phase Syndrome	0	1 (2%)	NS
MSLT Normal	16 (45%)	16 (40%)	/
MSLT Borderline	13 (37%)	15 (37%)	NS
MSLT Pathological	6 (17%)	9 (22%)	NS
Any Sleep Study Alteration	26 (48%)	28 (52%)	NS

* Chi-square test.

NF = Non-fatigued; MSLT = Multiple Sleep Latency Test.

† No cases of Bruxism, Central Sleep Apnea or Upper Airway

Resistance Syndrome were identified.