Table 1.
Search strategy used in electronic databases.
| Number | Search items |
|---|---|
| 1 | Randomised controlled trial |
| 2 | Controlled clinical trial |
| 3 | Randomised |
| 4 | Randomized |
| 5 | Randomly |
| 6 | Placebo |
| 7 | Trial |
| 8 | 1 or 2–7 |
| 9 | Tourette Syndrome |
| 10 | Tourette Disorder |
| 11 | Gilles de la Tourette Syndrome |
| 12 | Tourette∗ |
| 13 | Tic |
| 14 | 9 or 10–13 |
| 15 | Acupuncture therapy |
| 16 | Acupuncture |
| 17 | Body acupuncture |
| 18 | Scalp acupuncture |
| 19 | Auricular acupuncture |
| 20 | Electroacupuncture |
| 21 | Intradermal needling |
| 22 | Plum-blossom needle |
| 23 | Acupoints |
| 24 | Acu∗ |
| 25 | 15 or 16–24 |
| 26 | 8 and 14 and 25 |
Tourette∗: any words or phrases starting with “tourette”. Acu∗: any words or phrases starting with “acu”.