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Variables

Old Version You are viewing variable information that is kept around for historical purposes only. The latest version v0.20.0 is available here.

Name

ai_all

Label

Arousal Index

Description

Total number of arousals per hour of sleep. Ratio of count of arousals to total sleep time in hours. [(Total number of arousals) / (hours of sleep)]

Calculation

ai_all = 60 * ( arrembp + arremop + arnrembp + arnremop ) / slpprdp

Units

events per hour

Type

numeric

	N	Mean	StdDev	Median	Min	Max	Unknown	Total
Visit 1	5,642	19.2	± 10.7	16.8	0.0	110.4	162	5,804
Visit 2	2,613	18.4	± 10.2	16.2	2.6	81.4	1,467	4,080
CVD Outcomes	-	-	-	-	-	-	5,042	5,042

	N	Mean	StdDev	Median	Min	Max	Unknown	Total
Total	5,642	19.2	± 10.7	16.8	0.0	110.4	162	5,804
39.0 to 55.0 years	1,424	16.7	± 9.6	15.0	0.0	99.4	27	1,451
55.0 to 63.0 years	1,422	18.8	± 10.2	16.4	3.4	90.8	29	1,451
63.0 to 72.0 years	1,417	20.5	± 10.8	18.3	2.5	110.4	34	1,451
72.0 to 100.0 years	1,379	20.6	± 11.5	18.0	2.2	74.4	72	1,451

	N	Mean	StdDev	Median	Min	Max	Unknown	Total
Total	5,642	19.2	± 10.7	16.8	0.0	110.4	162	5,804
Female	2,951	17.0	± 9.2	15.1	2.1	74.7	88	3,039
Male	2,691	21.5	± 11.6	18.9	0.0	110.4	74	2,765

	N	Mean	StdDev	Median	Min	Max	Unknown	Total
Total	2,613	18.4	± 10.2	16.2	2.6	81.4	1,467	4,080
Female	1,413	16.5	± 9.0	14.6	2.6	80.6	806	2,219
Male	1,200	20.6	± 10.9	18.5	4.0	81.4	661	1,861

	N	Mean	StdDev	Median	Min	Max	Unknown	Total
Total	5,642	19.2	± 10.7	16.8	0.0	110.4	162	5,804
white	4,785	19.4	± 10.6	17.1	2.1	110.4	122	4,907
black	477	18.3	± 11.8	15.7	0.0	99.4	38	515
native amer/alaskan	11	18.7	± 12.6	14.1	8.6	53.2	-	11
asian/pacific islander	88	15.7	± 8.4	14.7	4.2	48.3	-	88
hispanic/mex. amer	278	17.0	± 9.8	14.9	4.3	78.0	2	280
other	3	22.3	± 5.2	22.2	17.2	27.6	-	3

Sleep Heart Health Study