Table 2.

Multidimensional sleep health definitions and frequencies.

Domain	Assessment	Definition	Good, n (%)	Poor, n (%)
Sleep timing	Actigraphy	Good: average sleep midpoint before 4:00AM Poor: average sleep midpoint after 4:00AM	41 (83.7)	8 (16.3)
Regularity of sleep timing	Actigraphy	Good: sleep midpoint standard deviation <65 min Poor: sleep midpoint standard deviation ≥65 min	27 (55.1)	22 (44.9)
Sleep quality	PSQI	Good: global score ≤5 Poor: global score >5	12 (24.5)	37 (75.5)
Alertness	ESS	Good: total score ≤10 Poor: total score >10	33 (67.4)	16 (32.7)
Sleep efficiency	Actigraphy	Good: ≥85% Poor: <85%	20 (40.8)	29 (59.2)
Sleep duration	Actigraphy	Good: total sleep time ≥420 min (7 h) Poor: total sleep time <420 min	11 (22.5)	38 (77.6)

Note. Data presented as frequency (percentage).

ESS=Epworth Sleepiness Scale; PSQI=Pittsburgh Sleep Quality Index.