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NSRR
AHI_A0H4 - CCSHS 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
v0.8.0
is
available here
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v0.3.1
ccshs
variables
Measurements
Polysomnography (PSG)
ahi_a0h4
ahi_a0h4
Overview
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Age
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History
ahi_a0h3a
ahi_a0h4a
Name
ahi_a0h4
Label
Apnea-Hypopnea Index (AHI) >= 4% - number of [all apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep
Calculation
ahi_a0h4
= 60 * (
hrembp4
+
hrop4
+
hnrbp4
+
hnrop4
+
carbp
+
carop
+
canbp
+
canop
+
oarbp
+
oarop
+
oanbp
+
oanop
) /
slpprdp
Units
events per hour
Type
numeric
Tags
central
obstructive
Visit vs Apnea-Hypopnea Index (AHI) >= 4% - number of [all apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep
N
Mean
StdDev
Median
Min
Max
Unknown
Total
Peds
-
-
-
-
-
-
-
-
Teenz
-
-
-
-
-
-
-
-
TREC
515
0.9
± 4.2
0.4
0.0
90.6
2
517
Age at time of visit vs Apnea-Hypopnea Index (AHI) >= 4% - number of [all apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep
TREC
N
Mean
StdDev
Median
Min
Max
Unknown
Total
Total
515
0.9
± 4.2
0.4
0.0
90.6
2
517
16.14 to 17.41 years
130
0.6
± 1.2
0.4
0.0
10.0
-
130
17.41 to 17.69 years
128
0.6
± 1.1
0.3
0.0
10.9
1
129
17.69 to 17.91 years
129
1.6
± 8.0
0.4
0.0
90.6
-
129
17.91 to 19.56 years
128
0.8
± 1.6
0.4
0.0
11.7
1
129
Male gender vs Apnea-Hypopnea Index (AHI) >= 4% - number of [all apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep
TREC
N
Mean
StdDev
Median
Min
Max
Unknown
Total
Total
515
0.9
± 4.2
0.4
0.0
90.6
2
517
No
255
0.5
± 0.9
0.3
0.0
11.4
1
256
Yes
260
1.3
± 5.8
0.5
0.0
90.6
1
261
Race vs Apnea-Hypopnea Index (AHI) >= 4% - number of [all apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep
TREC
N
Mean
StdDev
Median
Min
Max
Unknown
Total
Total
515
0.9
± 4.2
0.4
0.0
90.6
2
517
White
307
1.1
± 5.3
0.4
0.0
90.6
2
309
Black
185
0.7
± 1.1
0.3
0.0
11.1
-
185
Other
23
0.8
± 1.6
0.3
0.0
7.6
-
23