. Author manuscript; available in PMC: 2020 Oct 1.

Published in final edited form as: Sleep Health. 2019 Jun 14;5(5):514–520. doi: 10.1016/j.sleh.2019.05.001

Table 2:

Summary of Sleep Dimensions in Sample (N = 738)

	Minimum	25^th percentile	50^th percentile	75^th Percentile	Maximum
Individual dimensions
Regularity (SD in hours)	0.0	0.64	1.08	1.36	5.95
Satisfaction^a	1.0	3.17	3.74	4.29	5.0
Timing (sleep period midpoint)	11:22pm	2:43 am	3:39 am	4:28 am	10:36 am
Sleep Efficiency (in %)	35.76	74.97	80.5	87.01	99.95
Duration (in hours)	2.67	6.42	7.45	8.42	12.34
Composite score
Sleep health score^b	0.0	1	2	3	5.0

Notes: Regularity= SD sleep duration in hours; Timing = sleep period midpoint; Sleep Efficiency = hours asleep/hours in bed; Duration = Total sleep time in hours

Satisfaction is measured on a self-reported response scale 1–5; All other sleep variables are based on actigraphy data.

Sleep health can range from 0 to 5.