Name
sleepy4
Label
MSLT: Stanford Sleepiness Scale Prior to Nap 4
Description

Score from Stanford Sleepiness Scale (SSS). A subjective measure of sleepiness from 1-7, where higher scores indicate more sleepiness (Hoddes, E., & Dement, W. Z. V (1972). The development and use of the Stanford Sleepiness Scale (SSS). Psychophysiology, 9, 150.)

Search for all Stanford Sleepiness Scale variables within this dataset

Variable from a Multiple Sleep Latency Test (MSLT), Roehrs & Roth 1992 (PubMed ID: 1552009).

Search for all Multiple Sleep Latency Test variables within this dataset

Domain
currentsleepiness
  • 1: Feeling active and vital; alert; wide awake
  • 2: Could function at a high level; but not quite at peak; able to concentrate
  • 3: Relaxed; awake; responsive; but not at full alertness
  • 4: A little foggy; not a peak; let down
  • 5: Fogginess; beginning to lose interest in staying awake; slowed down
  • 6: Sleepiness; prefer to be lying down; fighting sleep; woozy
  • 7: Almost in reverie; sleep onset soon; losing struggle to remain awake
Type
choices
MSLT: Stanford Sleepiness Scale Prior to Nap 4 vs Study visit number
Visit 1 Visit 2 Visit 3 Visit 4 Visit 5 Incident Outcomes Tracking
Total 797 592 157 - - -
Feeling active and vital; alert; wide awake 171 209 57 - - -
Could function at a high level; but not quite at peak; able to concentrate 268 220 39 - - -
Relaxed; awake; responsive; but not at full alertness 234 108 40 - - -
A little foggy; not a peak; let down 82 36 14 - - -
Fogginess; beginning to lose interest in staying awake; slowed down 21 13 5 - - -
Sleepiness; prefer to be lying down; fighting sleep; woozy 19 5 2 - - -
Almost in reverie; sleep onset soon; losing struggle to remain awake 2 - - - - -
Unknown - 1 - - - -
MSLT: Stanford Sleepiness Scale Prior to Nap 4 vs Sex of the participant
Visit 1
Male Female Total
Total 423 374 797
Feeling active and vital; alert; wide awake 89 82 171
Could function at a high level; but not quite at peak; able to concentrate 151 117 268
Relaxed; awake; responsive; but not at full alertness 124 110 234
A little foggy; not a peak; let down 40 42 82
Fogginess; beginning to lose interest in staying awake; slowed down 12 9 21
Sleepiness; prefer to be lying down; fighting sleep; woozy 6 13 19
Almost in reverie; sleep onset soon; losing struggle to remain awake 1 1 2
MSLT: Stanford Sleepiness Scale Prior to Nap 4 vs Sex of the participant
Visit 2
Male Female Total
Total 312 280 592
Feeling active and vital; alert; wide awake 110 99 209
Could function at a high level; but not quite at peak; able to concentrate 113 107 220
Relaxed; awake; responsive; but not at full alertness 67 41 108
A little foggy; not a peak; let down 18 18 36
Fogginess; beginning to lose interest in staying awake; slowed down 3 10 13
Sleepiness; prefer to be lying down; fighting sleep; woozy 1 4 5
Almost in reverie; sleep onset soon; losing struggle to remain awake - - -
Unknown - 1 1
MSLT: Stanford Sleepiness Scale Prior to Nap 4 vs Sex of the participant
Visit 3
Male Female Total
Total 86 71 157
Feeling active and vital; alert; wide awake 32 25 57
Could function at a high level; but not quite at peak; able to concentrate 20 19 39
Relaxed; awake; responsive; but not at full alertness 20 20 40
A little foggy; not a peak; let down 9 5 14
Fogginess; beginning to lose interest in staying awake; slowed down 4 1 5
Sleepiness; prefer to be lying down; fighting sleep; woozy 1 1 2
Almost in reverie; sleep onset soon; losing struggle to remain awake - - -
MSLT: Stanford Sleepiness Scale Prior to Nap 4 vs Race of the participant
Visit 1
Asian Black Hispanic Native American White Total
Total 5 10 5 6 771 797
Feeling active and vital; alert; wide awake 1 4 2 - 164 171
Could function at a high level; but not quite at peak; able to concentrate 3 4 1 3 257 268
Relaxed; awake; responsive; but not at full alertness - 1 2 1 230 234
A little foggy; not a peak; let down 1 1 - - 80 82
Fogginess; beginning to lose interest in staying awake; slowed down - - - 1 20 21
Sleepiness; prefer to be lying down; fighting sleep; woozy - - - 1 18 19
Almost in reverie; sleep onset soon; losing struggle to remain awake - - - - 2 2
MSLT: Stanford Sleepiness Scale Prior to Nap 4 vs Race of the participant
Visit 2
Asian Black Hispanic Native American White Total
Total 4 6 5 4 573 592
Feeling active and vital; alert; wide awake - 4 1 2 202 209
Could function at a high level; but not quite at peak; able to concentrate 2 - 2 1 215 220
Relaxed; awake; responsive; but not at full alertness 2 1 1 - 104 108
A little foggy; not a peak; let down - 1 1 - 34 36
Fogginess; beginning to lose interest in staying awake; slowed down - - - 1 12 13
Sleepiness; prefer to be lying down; fighting sleep; woozy - - - - 5 5
Almost in reverie; sleep onset soon; losing struggle to remain awake - - - - - -
Unknown - - - - 1 1
MSLT: Stanford Sleepiness Scale Prior to Nap 4 vs Race of the participant
Visit 3
Asian Black Hispanic Native American White Total
Total 3 1 1 2 150 157
Feeling active and vital; alert; wide awake 1 - 1 2 53 57
Could function at a high level; but not quite at peak; able to concentrate - 1 - - 38 39
Relaxed; awake; responsive; but not at full alertness 2 - - - 38 40
A little foggy; not a peak; let down - - - - 14 14
Fogginess; beginning to lose interest in staying awake; slowed down - - - - 5 5
Sleepiness; prefer to be lying down; fighting sleep; woozy - - - - 2 2
Almost in reverie; sleep onset soon; losing struggle to remain awake - - - - - -