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Number of times having trouble falling asleep, past week

Codes and Frequencies

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For sample adults aged 18 and older, SLEEPFALL reports how often they had trouble falling asleep in the past week. This variable was included as a core item in the Adult Supplemental Items (ASI) section of the Sample Adult questionnaire, introduced in 2013.

Related Variables
Other sleep-related variables included in the ASI section include: SLEEPSTAY (number of times had trouble staying asleep, past week), SLEEPMEDS (number of times taking sleep medication, past week), and SLEEPREST (days woke up feeling rested, past week).


There are no comparability issues.


  • 2013-2018: Sample adults aged 18+.


  • 2013-2018