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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

cai0p

Label

Central Apnea Index all oxygen desaturations

Description

Central Apnea Index at all oxygen desaturations [(Total number of central apneas associated with all oxygen desaturations) / (hours of sleep)]

Calculation

cai0p = 60 * ( carbp + carop + canbp + canop ) / slpprdp

Units

events per hour

Type

numeric

	N	Mean	StdDev	Median	Min	Max	Unknown	Total
Visit 1	4,406	0.6	± 2.4	0.0	0.0	54.4	1,398	5,804
Visit 2	2,651	0.8	± 3.2	0.0	0.0	54.1	1,429	4,080
CVD Outcomes	-	-	-	-	-	-	5,042	5,042

	N	Mean	StdDev	Max	Unknown	Total
Total	4,406	0.6	± 2.4	54.4	1,398	5,804
39.0 to 55.0 years	1,144	0.3	± 1.5	24.5	307	1,451
55.0 to 63.0 years	1,081	0.4	± 1.8	31.7	370	1,451
63.0 to 72.0 years	1,060	0.6	± 2.6	40.1	391	1,451
72.0 to 100.0 years	1,121	0.9	± 3.4	54.4	330	1,451

	N	Mean	StdDev	Median	Max	Unknown	Total
Total	4,406	0.6	± 2.4	0.0	54.4	1,398	5,804
Female	2,269	0.2	± 1.1	0.0	31.3	770	3,039
Male	2,137	0.9	± 3.3	0.1	54.4	628	2,765

	N	Mean	StdDev	Median	Max	Unknown	Total
Total	2,651	0.8	± 3.2	0.0	54.1	1,429	4,080
Female	1,425	0.4	± 2.2	0.0	54.1	794	2,219
Male	1,226	1.3	± 4.1	0.2	48.5	635	1,861

	N	Mean	StdDev	Max	Unknown	Total
Total	4,406	0.6	± 2.4	54.4	1,398	5,804
white	3,700	0.6	± 2.6	54.4	1,207	4,907
black	397	0.4	± 1.5	15.0	118	515
native amer/alaskan	9	0.2	± 0.5	1.4	2	11
asian/pacific islander	70	0.2	± 0.5	3.2	18	88
hispanic/mex. amer	227	0.3	± 1.7	19.6	53	280
other	3	0.0	± 0.0	0.0	-	3

Sleep Heart Health Study