Name

timest1p

Label

Percent of sleep time in Stage 1 sleep

Description

[100*(number of minutes scored as stage 1 sleep)/(total sleep time)]

Units
percent (%)
Type
numeric
Visit vs Percent of sleep time in Stage 1 sleep
N Mean StdDev Median Min Max Unknown Total
Peds - - - - - - - -
Teenz - - - - - - - -
TREC 513 4.1 ± 2.6 3.6 0.4 20.4 4 517
Age at time of visit vs Percent of sleep time in Stage 1 sleep
TREC
N Mean StdDev Median Min Max Unknown Total
Total 513 4.1 ± 2.6 3.6 0.4 20.4 4 517
16.14 to 17.41 years 129 4.0 ± 2.4 3.6 0.7 15.4 1 130
17.41 to 17.69 years 128 4.3 ± 3.0 3.7 0.4 20.4 1 129
17.69 to 17.91 years 128 4.3 ± 2.3 3.8 0.7 12.2 1 129
17.91 to 19.56 years 128 4.1 ± 2.7 3.4 0.4 18.3 1 129
Male gender vs Percent of sleep time in Stage 1 sleep
TREC
N Mean StdDev Median Min Max Unknown Total
Total 513 4.1 ± 2.6 3.6 0.4 20.4 4 517
No 254 3.8 ± 2.5 3.4 0.4 20.4 2 256
Yes 259 4.5 ± 2.7 3.8 0.4 18.3 2 261
Race vs Percent of sleep time in Stage 1 sleep
TREC
N Mean StdDev Median Min Max Unknown Total
Total 513 4.1 ± 2.6 3.6 0.4 20.4 4 517
White 307 4.1 ± 2.4 3.6 0.4 18.2 2 309
Black 183 4.3 ± 2.9 3.6 0.7 20.4 2 185
Other 23 4.1 ± 2.2 3.6 1.6 9.4 - 23