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CAI4PA - CFS Variables
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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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v0.4.1
cfs
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Polysomnography
Respiratory Events
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cai4pa
cai4pa
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History
cai4p
cent_obs_ratio
Name
cai4pa
Label
Central Apnea Index >= 4% - number of [central apneas with >= 4% oxygen desaturation or arousal] per hour of sleep
Calculation
cai4pa
= 60 * (
carba4
+
caroa4
+
canba4
+
canoa4
) /
slpprdp
Units
events per hour
Type
numeric
Tags
cai4pa
Visit vs Central Apnea Index >= 4% - number of [central apneas with >= 4% oxygen desaturation or arousal] per hour of sleep
N
Mean
StdDev
Median
Min
Max
Unknown
Total
Visit 5
714
0.3
± 2.0
0.0
0.0
46.9
21
735
Age at time of visit vs Central Apnea Index >= 4% - number of [central apneas with >= 4% oxygen desaturation or arousal] per hour of sleep
Visit 5
N
Mean
StdDev
Median
Min
Max
Unknown
Total
Total
639
0.3
± 2.1
0.0
0.0
46.9
19
658
5-14 yrs old
62
0.1
± 0.2
0.0
0.0
0.7
2
64
15-24 yrs old
110
0.08
± 0.2
0.0
0.0
1.1
2
112
25-34 yrs old
62
0.4
± 0.9
0.0
0.0
4.5
-
62
35-44 years
93
0.3
± 1.7
0.0
0.0
16.6
5
98
45-54 years
142
0.2
± 1.1
0.0
0.0
13.0
6
148
55-64 years
81
0.3
± 1.0
0.0
0.0
7.6
3
84
65-74 years
56
0.4
± 0.9
0.0
0.0
4.3
1
57
75-84 years
31
0.7
± 1.5
0.0
0.0
6.6
-
31
85 years or older
2
24.2
± 32.1
24.2
1.6
46.9
-
2
Sex vs Central Apnea Index >= 4% - number of [central apneas with >= 4% oxygen desaturation or arousal] per hour of sleep
Visit 5
N
Mean
StdDev
Median
Min
Max
Unknown
Total
Total
714
0.3
± 2.0
0.0
0.0
46.9
21
735
Female
396
0.1
± 0.4
0.0
0.0
5.0
10
406
Male
318
0.6
± 3.0
0.0
0.0
46.9
11
329
Race vs Central Apnea Index >= 4% - number of [central apneas with >= 4% oxygen desaturation or arousal] per hour of sleep
Visit 5
N
Mean
StdDev
Median
Min
Max
Unknown
Total
Total
714
0.3
± 2.0
0.0
0.0
46.9
21
735
White
295
0.5
± 3.0
0.0
0.0
46.9
9
304
Black
397
0.2
± 0.8
0.0
0.0
13.0
12
409
Other
22
0.09
± 0.2
0.0
0.0
0.7
-
22