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Retrieved, duplicate, and unique items from each search system.
| Database | Number retrieved | External dups | New articles added |
|---|---|---|---|
| PsycInfo (Ovid) | 1,576 | 546 | 1,030 |
| Ovid Medline | 1,507 | 682 | 825 |
| Embase (Ovid) | 1,185 | 126 | 1,059 |
| Ovid Evidence Based Medicine Reviews | 358 | 214 | 144 |
| PTSDpubs | 160 | 11 | 149 |
| TRIP database | 78 | 4 | 74 |
| NICE | 1,143 | 50 | 1,093 |
| ICTRP | 40 | 6 | 34 |
| Open Gray | 2 | 0 | 2 |
| Totals | 6,049 | 1,639 | 4,410 |
