Terms and Synonyms Searched:
| Terms | Search Results* | Entire Database** |
|---|---|---|
| Synonyms | ||
| ionis | 25 studies | 145 studies |
| Double | 25 studies | 81,250 studies |
| doubled | -- | 330 studies |
| doubling | -- | 651 studies |
| Dual | -- | 6,200 studies |
| Duplicate | -- | 470 studies |
| duplicating | -- | 9 studies |
| Replicate | -- | 498 studies |
| replicated | -- | 235 studies |
| replicates | -- | 119 studies |
| replicating | -- | 140 studies |
| twinning | -- | 8 studies |
| ISI | 25 studies | 1,581 studies |
| Insomnia severity index | -- | 1,075 studies |
| Placebo | 25 studies | 74,066 studies |
| placebo-controlled | 25 studies | 30,504 studies |
| fake drug | -- | 2 studies |
| sham therapy | -- | 175 studies |
| sham treatment | -- | 582 studies |
| once weekly | 25 studies | 5,590 studies |
| once a week | 3 studies | 3,110 studies |
| 1 TIME PER WEEK | -- | 69 studies |
| One Time Per Week | -- | 65 studies |
| -- | No studies found |
| * | Number of studies in the search results containing the term or synonym |
| ** | Number of studies in the entire database containing the term or synonym |