Table 1:

Percent of respondents with idiopathic hypersomnia endorsing daily symptoms, comparing those with and without habitual sleep durations of at least 10 hours

	Idiopathic hypersomnia with long sleep time	Idiopathic hypersomnia without long sleep	p-value
Excessive daytime sleepiness	235 (97.9%)	222 (97.4%)	0.70
Intentional napping	154 (64.2%)	96 (42.1%)	<0.0001
Unintentional daytime sleep	95 (39.8%)	74 (32.5%)	0.10
Requiring multiple alarms to awaken	186 (77.5%)	140 (61.7%)	0.0002
Having trouble waking up and functioning with normal alertness	211 (88.3%)	158 (69.3%)	<0.0001
Brain fog (being unable to think clearly or concentrate at any time throughout the day)	205 (86.9%)	175 (78.1%)	0.01
Difficulty remembering things	170 (73.3%)	156 (70.3%)	0.48
Automatic behaviors	54 (23.8%)	46 (21.6%)	0.58