Table 1.
Age-adjusted self-reported sleep duration, by year 2004–2017, National Health Interview Survey, sample adults aged 18–84
| Hours of sleep | ≤6 hr | 7–8 hr | ≥9 hr | N |
|---|---|---|---|---|
| 2004 | 28.6% | 62.9% | 8.5% | 29 949 |
| 2005 | 28.6% | 62.8% | 8.6% | 30 023 |
| 2006 | 28.7% | 63.0% | 8.3% | 23 121 |
| 2007 | 27.0% | 65.0% | 8.1% | 22 220 |
| 2008 | 28.5% | 62.8% | 8.7% | 20 810 |
| 2009 | 28.5% | 62.5% | 9.0% | 26 765 |
| 2010 | 28.9% | 61.8% | 9.3% | 26 058 |
| 2011 | 29.1% | 62.3% | 8.5% | 31 866 |
| 2012 | 29.3% | 62.4% | 8.4% | 33 108 |
| 2013 | 30.9% | 60.8% | 8.3% | 32 487 |
| 2014 | 30.9% | 61.1% | 8.0% | 34 517 |
| 2015 | 32.2% | 59.7% | 8.1% | 31 419 |
| 2016 | 32.5% | 60.4% | 7.2% | 30 997 |
| 2017 | 32.9% | 59.8% | 7.3% | 25 042 |
| N = 398 382 |
Source: National Health Interview Survey, 2004–2017.
Data are weighted to be representative of the U.S. population. Age distribution is adjusted to the 2004 age distribution in the U.S.