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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_nrem

Label

Arousal Index (NREM)

Description

Non-REM Arousal Index - total arousals in non-REM sleep per hours of non-REM sleep [(Total number of arousals in non-REM sleep) / (hours of non-REM sleep)]

Calculation

ai_nrem = 60 * ( arnrembp + arnremop ) / ( slpprdp - minremp )

Units

events per hour

Type

numeric

	N	Mean	StdDev	Median	Min	Max	Unknown	Total
Visit 1	5,642	20.0	± 11.6	17.3	0.0	112.5	162	5,804
Visit 2	2,613	19.2	± 11.1	16.7	1.9	83.8	1,467	4,080
CVD Outcomes	-	-	-	-	-	-	5,042	5,042

	N	Mean	StdDev	Median	Min	Max	Unknown	Total
Total	5,642	20.0	± 11.6	17.3	0.0	112.5	162	5,804
39.0 to 55.0 years	1,424	17.0	± 10.3	15.1	0.0	103.9	27	1,451
55.0 to 63.0 years	1,422	19.4	± 10.9	16.7	1.8	91.2	29	1,451
63.0 to 72.0 years	1,417	21.6	± 11.8	19.2	1.6	112.5	34	1,451
72.0 to 100.0 years	1,379	21.9	± 12.5	18.9	2.0	77.6	72	1,451

	N	Mean	StdDev	Median	Min	Max	Unknown	Total
Total	5,642	20.0	± 11.6	17.3	0.0	112.5	162	5,804
Female	2,951	17.8	± 10.0	15.6	1.6	77.6	88	3,039
Male	2,691	22.4	± 12.6	19.6	0.0	112.5	74	2,765

	N	Mean	StdDev	Median	Min	Max	Unknown	Total
Total	2,613	19.2	± 11.1	16.7	1.9	83.8	1,467	4,080
Female	1,413	17.2	± 9.9	14.9	1.9	82.0	806	2,219
Male	1,200	21.5	± 11.9	18.7	4.1	83.8	661	1,861

	N	Mean	StdDev	Median	Min	Max	Unknown	Total
Total	5,642	20.0	± 11.6	17.3	0.0	112.5	162	5,804
white	4,785	20.3	± 11.5	17.6	1.6	112.5	122	4,907
black	477	18.9	± 12.7	15.7	0.0	103.9	38	515
native amer/alaskan	11	20.0	± 13.8	14.9	10.7	58.6	-	11
asian/pacific islander	88	16.0	± 9.1	14.3	4.3	51.1	-	88
hispanic/mex. amer	278	17.5	± 10.5	15.3	3.7	79.0	2	280
other	3	22.6	± 5.6	23.8	16.6	27.5	-	3

Sleep Heart Health Study