Table 3.

Internal consistency (Cronbach's α) of all domains, and correlation (r _s) between sleep quality and all domains of the DCCASP

	Cronbach's α
Domain	All	Males	Females	r s *
Sleep quality	0.890	0.917	0.883	—
Mood	0.899	0.896	0.901	0.525
Fatigue	0.893	0.897	0.893	0.546
Daytime wakefulness	0.864	0.929	0.847	0.469
Attention	0.870	0.815	0.878	0.479
Memory	0.930	0.933	0.931	0.380
Language processing	0.938	0.935	0.940	0.445

^* All significant at p < 0.0001.