Stanford Sleepiness Scale (SSS)
Select the statement that best describes your current level of sleepiness.
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How to Use This Scale
The Stanford Sleepiness Scale (SSS) is a quick, single-item measure of your current sleepiness. Choose the statement that feels most accurate. It can be repeated at different times of the day to track changes.
FAQ
Q: Is this a diagnosis?
A: No. This is only an educational tool to help track alertness. For persistent sleepiness, consult a qualified professional.
A: No. This is only an educational tool to help track alertness. For persistent sleepiness, consult a qualified professional.
Q: How often should I use this?
A: You can use it daily, or even multiple times in a day, especially when tracking alertness during work, study, or treatment.
A: You can use it daily, or even multiple times in a day, especially when tracking alertness during work, study, or treatment.
Q: What does a higher score mean?
A: Higher scores indicate more severe sleepiness and the possibility of needing rest or medical evaluation.
A: Higher scores indicate more severe sleepiness and the possibility of needing rest or medical evaluation.
References
- Hoddes E, Zarcone V, Smythe H, Phillips R, Dement WC. (1973). Quantification of sleepiness: a new approach. Psychophysiology, 10(4):431–436.
- National Sleep Foundation. www.thensf.org
- NIH – National Heart, Lung, and Blood Institute. www.nhlbi.nih.gov