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NSRR
AI_NREM - SHHS Variables
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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
.
v0.10.0
shhs
variables
Measurements
Polysomnography
Arousals
ai_nrem
ai_nrem
Overview
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Age
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History
ahremop
ai_rem
Name
ai_nrem
Label
Arousal Index (NREM)
Description
Non-REM Arousal Index - total arousals in non-REM sleep per hours of non-REM sleep
Calculation
ai_nrem
= 60 * (
arnrembp
+
arnremop
) / (
slpprdp
-
minremp
)
Units
events per hour
Type
numeric
Tags
ai_nrem
SHHS Visit Number vs Arousal Index (NREM)
N
Mean
StdDev
Median
Min
Max
Unknown
Total
Visit 1
5,642
20.0
± 11.6
17.3
0.0
112.5
162
5,804
Interim Follow-up Visit
-
-
-
-
-
-
-
-
Visit 2
2,613
19.2
± 11.1
16.7
1.9
83.8
1,467
4,080
CVD Outcomes
-
-
-
-
-
-
-
-
Age at SHHS1 vs Arousal Index (NREM)
Visit 1
N
Mean
StdDev
Median
Min
Max
Unknown
Total
Total
5,642
20.0
± 11.6
17.3
0.0
112.5
162
5,804
35-44 years
336
15.6
± 9.4
13.8
1.6
95.8
6
342
45-54 years
999
17.4
± 10.3
15.7
0.0
103.9
18
1,017
55-64 years
1,734
19.7
± 11.1
16.8
1.8
91.2
35
1,769
65-74 years
1,572
21.3
± 11.9
18.8
1.6
112.5
45
1,617
75-84 years
907
22.3
± 12.3
19.3
2.0
75.8
48
955
85 years or older
94
24.9
± 15.4
21.6
5.3
77.6
10
104
Gender vs Arousal Index (NREM)
Visit 1
N
Mean
StdDev
Median
Min
Max
Unknown
Total
Total
5,642
20.0
± 11.6
17.3
0.0
112.5
162
5,804
Male
2,691
22.4
± 12.6
19.6
0.0
112.5
74
2,765
Female
2,951
17.8
± 10.0
15.5
1.6
77.6
88
3,039
Gender vs Arousal Index (NREM)
Visit 2
N
Mean
StdDev
Median
Min
Max
Unknown
Total
Total
2,613
19.2
± 11.1
16.7
1.9
83.8
1,467
4,080
Male
1,200
21.5
± 11.9
18.7
4.1
83.8
661
1,861
Female
1,413
17.2
± 9.9
14.9
1.9
82.0
806
2,219
Race vs Arousal Index (NREM)
Visit 1
N
Mean
StdDev
Median
Min
Max
Unknown
Total
Total
5,642
20.0
± 11.6
17.3
0.0
112.5
162
5,804
White
4,785
20.3
± 11.5
17.6
1.6
112.5
122
4,907
Black
477
18.9
± 12.7
15.7
0.0
103.9
38
515
Other
380
17.3
± 10.3
15.3
3.7
79.0
2
382
Race vs Arousal Index (NREM)
Visit 2
N
Mean
StdDev
Median
Min
Max
Unknown
Total
Total
2,613
19.2
± 11.1
16.7
1.9
83.8
1,467
4,080
White
2,280
19.4
± 11.2
17.0
1.9
83.8
1,307
3,587
Black
174
19.2
± 11.5
15.5
3.3
57.0
82
256
Other
159
16.5
± 9.4
14.5
3.6
56.6
78
237