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CAI4P - CFS Variables
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You are viewing variable information that is kept around for historical purposes only. The latest version
v0.7.0
is
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v0.4.0
cfs
variables
Polysomnography
Respiratory Events
Indexes
cai4p
cai4p
Overview
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Age
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History
ahtdurop
cai4pa
Name
cai4p
Label
Central Apnea Index >= 4% - number of [central apneas with >= 4% oxygen desaturation] per hour of sleep
Calculation
cai4p
= 60 * (
carbp4
+
carop4
+
canbp4
+
canop4
) /
slpprdp
Units
events per hour
Type
numeric
Tags
cai4p
Visit vs Central Apnea Index >= 4% - number of [central apneas with >= 4% oxygen desaturation] per hour of sleep
N
Mean
StdDev
Median
Min
Max
Unknown
Total
Visit 5
722
0.3
± 2.0
0.0
0.0
46.5
13
735
Age at time of visit vs Central Apnea Index >= 4% - number of [central apneas with >= 4% oxygen desaturation] per hour of sleep
Visit 5
N
Mean
StdDev
Median
Min
Max
Unknown
Total
Total
645
0.3
± 2.1
0.0
0.0
46.5
13
658
5-14 yrs old
63
0.07
± 0.2
0.0
0.0
0.7
1
64
15-24 yrs old
111
0.06
± 0.2
0.0
0.0
1.1
1
112
25-34 yrs old
62
0.3
± 0.7
0.0
0.0
3.4
-
62
35-44 years
95
0.3
± 1.7
0.0
0.0
16.3
3
98
45-54 years
143
0.2
± 0.9
0.0
0.0
9.3
5
148
55-64 years
82
0.3
± 0.9
0.0
0.0
7.4
2
84
65-74 years
56
0.3
± 0.7
0.0
0.0
3.3
1
57
75-84 years
31
0.6
± 1.5
0.0
0.0
6.4
-
31
85 years or older
2
23.7
± 32.3
23.7
0.9
46.5
-
2
Sex vs Central Apnea Index >= 4% - number of [central apneas with >= 4% oxygen desaturation] per hour of sleep
Visit 5
N
Mean
StdDev
Median
Min
Max
Unknown
Total
Total
722
0.3
± 2.0
0.0
0.0
46.5
13
735
Female
400
0.09
± 0.4
0.0
0.0
5.0
6
406
Male
322
0.5
± 2.9
0.0
0.0
46.5
7
329
Race vs Central Apnea Index >= 4% - number of [central apneas with >= 4% oxygen desaturation] per hour of sleep
Visit 5
N
Mean
StdDev
Median
Min
Max
Unknown
Total
Total
722
0.3
± 2.0
0.0
0.0
46.5
13
735
White
297
0.5
± 3.0
0.0
0.0
46.5
7
304
Black
403
0.2
± 0.6
0.0
0.0
9.3
6
409
Other
22
0.07
± 0.2
0.0
0.0
0.7
-
22