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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

rdi4ps

Label

Overall RDI (Supine) at 4% oxygen desaturation

Description

Supine RDI at 4% oxygen desaturation [(Total number of apneas and hypopneas in supine body position associated with >= 4% oxygen desaturation) / (hours of sleep)]

Calculation

rdi4ps = 60 * ( hrembp4 + hnrbp4 + carbp4 + canbp4 + oarbp4 + oanbp4 ) / ( remepbp + nremepbp )

Units

events per hour

Type

numeric

	N	Mean	StdDev	Median	Min	Max	Unknown	Total
Visit 1	4,221	12.8	± 18.2	5.5	0.0	120.0	1,583	5,804
Visit 2	2,345	15.3	± 19.9	7.5	0.0	136.0	1,735	4,080
CVD Outcomes	-	-	-	-	-	-	5,042	5,042

	N	Mean	StdDev	Median	Max	Unknown	Total
Total	4,221	12.8	± 18.2	5.5	120.0	1,583	5,804
39.0 to 55.0 years	977	8.5	± 15.7	2.1	120.0	474	1,451
55.0 to 63.0 years	1,058	12.1	± 17.7	4.8	120.0	393	1,451
63.0 to 72.0 years	1,055	15.3	± 20.1	7.7	120.0	396	1,451
72.0 to 100.0 years	1,131	14.7	± 18.1	8.2	120.0	320	1,451

	N	Mean	StdDev	Median	Max	Unknown	Total
Total	4,221	12.8	± 18.2	5.5	120.0	1,583	5,804
Female	2,222	8.7	± 14.7	3.1	120.0	817	3,039
Male	1,999	17.2	± 20.6	9.4	120.0	766	2,765

	N	Mean	StdDev	Median	Max	Unknown	Total
Total	2,345	15.3	± 19.9	7.5	136.0	1,735	4,080
Female	1,260	11.0	± 16.2	4.8	136.0	959	2,219
Male	1,085	20.4	± 22.4	12.0	135.0	776	1,861

	N	Mean	StdDev	Median	Min	Max	Unknown	Total
Total	4,221	12.8	± 18.2	5.5	0.0	120.0	1,583	5,804
white	3,598	13.2	± 18.5	5.8	0.0	120.0	1,309	4,907
black	369	11.5	± 17.7	4.5	0.0	120.0	146	515
native amer/alaskan	6	9.5	± 9.6	8.1	0.3	26.2	5	11
asian/pacific islander	71	8.4	± 14.9	2.2	0.0	91.8	17	88
hispanic/mex. amer	176	9.0	± 14.2	3.5	0.0	72.0	104	280
other	1	0.0	-	0.0	0.0	0.0	2	3

Sleep Heart Health Study