| Sleep aid | Percentage of respondents |
|---|---|
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
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Source
Release date
March 2009
Region
United States
Survey time period
September 22 - October 30, 2008
Number of respondents
1,000 respondents
Age group
18 years and older
Special properties
Head of household
Method of interview
Telephone interview
Supplementary notes
* At least a few nights a week.
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