Name

avgefficiency5

Label

Average daily sleep efficiency in all days from actigraphy

Description

Sleep efficiency is the proportion of sleep duration (i.e. total sleep time, tst) in total rest period (i.e. rest interval) in main sleep. Sleep duration is the interval between sleep onset time and sleep offset time while asleep. In this study, rest interval is the same as in-bed period.

Units

percent

Type

numeric

	N	Mean	StdDev	Median	Min	Max	Unknown	Total
Total	2,151	89.8	± 3.7	90.4	66.2	98.6	86	2,237
54.0 to 62.0 years	544	89.8	± 3.6	90.1	72.7	97.0	16	560
62.0 to 69.0 years	537	89.8	± 3.7	90.5	66.2	96.6	22	559
69.0 to 77.0 years	532	89.7	± 3.9	90.5	73.1	96.2	27	559
77.0 to 95.0 years	538	90.0	± 3.6	90.5	69.5	98.6	21	559

	N	Mean	StdDev	Median	Min	Max	Unknown	Total
Total	2,151	89.8	± 3.7	90.4	66.2	98.6	86	2,237
Female	1,155	90.3	± 3.3	90.8	69.5	98.6	43	1,198
Male	996	89.2	± 4.0	89.9	66.2	96.6	43	1,039

	N	Mean	StdDev	Median	Min	Max	Unknown	Total
Total	2,151	89.8	± 3.7	90.4	66.2	98.6	86	2,237
White, Caucasian	806	90.5	± 3.4	91.3	71.4	97.0	24	830
Chinese American	244	89.5	± 4.0	90.3	73.2	96.1	21	265
Black, African-American	597	89.3	± 3.9	89.8	66.2	97.1	19	616
Hispanic	504	89.4	± 3.5	89.8	72.7	98.6	22	526

Multi-Ethnic Study of Atherosclerosis