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NSRR
TIMEST2 - CCSHS Variables
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Cleveland Children's Sleep and Health Study
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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
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v0.3.0
ccshs
variables
Measurements
Polysomnography (PSG)
timest2
timest2
Overview
Graphs
Histogram
Age
Gender
Race
More
History
timest1p
timest2p
Name
timest2
Label
Time in Stage 2 sleep
Description
Total time scored as stage 2 sleep rounded to nearest minute
Units
minutes (min)
Type
numeric
Tags
non rapid
non-rapid eye movement sleep
non rem
non-rem
nrem
Visit vs Time in Stage 2 sleep
N
Mean
StdDev
Median
Min
Max
Unknown
Total
Peds
-
-
-
-
-
-
-
-
Teenz
-
-
-
-
-
-
-
-
TREC
513
242.6
± 49.9
247.0
7.0
365.0
4
517
Age at time of visit vs Time in Stage 2 sleep
TREC
N
Mean
StdDev
Median
Min
Max
Unknown
Total
Total
513
242.6
± 49.9
247.0
7.0
365.0
4
517
16.14 to 17.41 years
129
235.2
± 45.4
231.0
130.0
365.0
1
130
17.41 to 17.69 years
128
245.0
± 53.0
254.0
7.0
360.0
1
129
17.69 to 17.91 years
128
245.8
± 48.2
250.5
114.0
357.0
1
129
17.91 to 19.56 years
128
244.4
± 52.4
248.0
99.0
356.0
1
129
Male gender vs Time in Stage 2 sleep
TREC
N
Mean
StdDev
Median
Min
Max
Unknown
Total
Total
513
242.6
± 49.9
247.0
7.0
365.0
4
517
No
254
245.7
± 47.5
247.5
120.0
365.0
2
256
Yes
259
239.6
± 52.1
246.0
7.0
360.0
2
261
Race vs Time in Stage 2 sleep
TREC
N
Mean
StdDev
Median
Min
Max
Unknown
Total
Total
513
242.6
± 49.9
247.0
7.0
365.0
4
517
White
307
241.6
± 49.6
245.0
7.0
365.0
2
309
Black
183
244.9
± 49.5
250.0
99.0
357.0
2
185
Other
23
237.7
± 57.6
247.0
120.0
317.0
-
23