Table 2.
Databases where trials were found that were not found in Medlinea
| Acute Respiratory Infections (n = 57 meta-analyses) | Infectious Diseases (n = 38 meta-analyses) | Developmental, Psychosocial and Learning Problems (n = 34 meta-analyses) | ||||
|---|---|---|---|---|---|---|
| Database | Total Trials Found (of 398)b | Number found that were not in MedLine (of 65) | Total Trials Found (of 238)b | Number found that were not in MedLine (of 32) | Total Trials Found (of 144)b | Number found that were not in MedLine or PsycINFO (of 23) |
| Medline | 333 (84 %) | - | 206 (87 %) | - | - | - |
| BIOSIS | 258 | 13 | 164 | 7 | 72 | 1 |
| CAB Direct | 1 | 0 | 4 | 0 | 0 | 0 |
| CINAHL | 75 | 0 | 32 | 1 | 43 | 0 |
| EMBASE | 310 | 20 | 178 | 6 | 84 | 2 |
| ERIC | 1 | 1 | 0 | 0 | 32 | 4 |
| HAPI | 0 | 0 | 0 | 0 | 0 | 0 |
| IPA | 104 | 3 | 40 | 1 | 13 | 0 |
| LILACS | 0 | 0 | 5 | 0 | 2 | 0 |
| PsycINFO | 8 | 3 | 2 | 0 | 121 (84 %)c | - |
aPercentages do not match those in Table 1; the percentages here are an average across all trials (by review group)
bNumber of trials not found in any database was 26 for ARI, 18 for ID, and 12 for DPLP. Number of systematic reviews with ≥1 trial not found in any database was 10 for ARI, 9 for ID, and 8 for DPLP
cTotal trials found in Medline and/or PsycINFO