Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Top 10 high frequency keywords.
| Rank | Keyword | Counts |
|---|---|---|
| 1 | Insomnia | 872 |
| 2 | Depression | 854 |
| 3 | Prevalence | 464 |
| 4 | Sleep | 380 |
| 5 | Anxiety | 362 |
| 6 | Validation | 193 |
| 7 | Cognitive-behavioral therapy | 174 |
| 8 | Quality-of-life | 173 |
| 9 | Epidemiology | 156 |
| 10 | Association | 146 |
| 11 | Metaanalysis | 141 |
| 12 | Risk | 131 |
| 13 | Psychiatric-disorders | 130 |
| 14 | Health | 127 |
| 15 | Sleep disturbance | 115 |
| 16 | Major depressive disorder | 110 |
| 17 | Adults | 104 |
| 18 | Efficacy | 98 |
| 19 | Pain | 98 |
| 20 | Major depression | 96 |
