| 1985 to September 2004 | |
|---|---|
| Searched September 15, 2004 | |
| 1. | insomni$.mp. |
| 2. | exp insomnia/ |
| 3. | (sleep adj onset adj3 (delay$ or latenc$)).mp. |
| 4. | (disorder$ adj initiating adj2 maintaining adj sleep).mp. |
| 5. | (early adj2 awaken$).mp. |
| 6. | (sleeplessness or agrypnia$ or hyposomnia$).mp. |
| 7. | (((time-zone or “time zone”) adj2 change$) or “jet lag”).mp. |
| 8. | or/1–7 |
| 9. | “randomized controlled trial$”.mp. |
| 10. | “controlled clinical trial$”.mp. |
| 11. | “random allocation”.mp. |
| 12. | (“double blind” adj3 method$).mp. |
| 13. | (“single blind” adj3 method$).mp. |
| 14. | (clin$ adj25 trial$).mp. |
| 15. | ((singl$ or doubl$ or trebl$ or tripl$) adj25 (blind$ or mask$)).ti,ab. |
| 16. | placebo$.ti,ab. |
| 17. | random$.ti,ab. |
| 18. | “research design$”.mp. |
| 19. | “clinical research”.mp. |
| 20. | or/9–19 |
| 21. | animal/ |
| 22. | 20 not 21 |
| 23. | 8 and 22 |
From: Appendix A: Exact Search Strings
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