timeremp timest2
Name
timest1
Label
Total duration of sleep in stage 1 sleep from type I polysomnography
Description

Total time scored as stage 1 rounded to nearest minute

Calculation
timest1 = minstg1p
Units
minutes
Type
numeric
Tags
ttldursp_s1_f1t1
Visit vs Total duration of sleep in stage 1 sleep from type I polysomnography
N Mean StdDev Median Min Max Unknown Total
Visit 5 701 18.0 ± 11.6 16.0 2.0 102.0 34 735
Participant's age (category) vs Total duration of sleep in stage 1 sleep from type I polysomnography
Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 629 18.0 ± 11.8 15.0 2.0 102.0 29 658
5-14 yrs old 59 13.2 ± 8.6 11.0 3.0 55.0 5 64
15-24 yrs old 111 15.7 ± 8.2 14.0 3.0 54.0 1 112
25-34 yrs old 60 15.9 ± 8.0 15.0 3.0 37.0 2 62
35-44 years 94 18.5 ± 13.9 15.0 2.0 102.0 4 98
45-54 years 143 17.7 ± 9.8 16.0 3.0 51.0 5 148
55-64 years 80 20.3 ± 13.0 18.0 4.0 67.0 4 84
65-74 years 52 20.3 ± 12.7 18.0 3.0 68.0 5 57
75-84 years 28 29.0 ± 20.2 25.0 6.0 77.0 3 31
85 years or older 2 35.5 ± 12.0 35.5 27.0 44.0 - 2
Participant's sex vs Total duration of sleep in stage 1 sleep from type I polysomnography
Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 701 18.0 ± 11.6 16.0 2.0 102.0 34 735
Female 388 15.8 ± 8.8 14.5 2.0 57.0 18 406
Male 313 20.7 ± 13.8 17.0 3.0 102.0 16 329
Participant's race vs Total duration of sleep in stage 1 sleep from type I polysomnography
Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 701 18.0 ± 11.6 16.0 2.0 102.0 34 735
White 292 18.7 ± 11.7 16.0 3.0 102.0 12 304
Black 387 17.7 ± 11.7 15.0 2.0 70.0 22 409
More than one race 22 15.2 ± 7.4 16.0 4.0 28.0 - 22