Table 1

Derived sleep scales of the MOS-Sleep measure

MOS-Sleep: questions	Question number
How long did it usually take for you to fall asleep during the past 4 weeks?	1
On average, how many hours did you sleep each night during the past 4 weeks?	2
How often during the past 4 weeks did you feel that your sleep was not quiet (moving restlessly, feeling tense, speaking etc, while sleeping)?	3
How often during the past 4 weeks did you get enough sleep to feel rested upon waking in the morning?	4
How often during the past 4 weeks did you awaken short of breath or with a headache?	5
How often during the past 4 weeks did you feel drowsy or sleepy during the day?	6
How often during the past 4 weeks did you have trouble falling asleep?	7
How often during the past 4 weeks did you awaken during your sleep time and have trouble falling asleep again?	8
How often during the past 4 weeks did you have trouble staying awake during the day?	9
How often during the past 4 weeks did you snore during your sleep?	10
How often during the past 4 weeks did you take naps (5 min or longer) during the day?	11
How often during the past 4 weeks did you get the amount of sleep you need?	12

MOS-Sleep: scale	MOS-Sleep questions used to calculate scale*
Sleep disturbance	1, 3, 7, 8
Snoring	10
Sleep short of breath or headache	5
Sleep adequacy	4, 12
Sleep somnolence	6, 9, 11
Sleep Problems Index I	4, 5, 7, 8, 9, 12
Sleep Problems Index II	1, 3, 4, 5, 6, 7, 8, 9, 12