Table 4 Records identified by each of the bibliographic databases and citation tracking resources
From: Citation searching: a systematic review case study of multiple risk behaviour interventions
Database | Total records identified | Total included studies available | Included studies retrieved | Recall % (n = 40) | Precision % | Number needed to read (NNR) |
|---|---|---|---|---|---|---|
MEDLINE | 8279 | 39 | 30 | 75% | 0.36% | 276 |
Embase | 13176 | 38 | 25 | 62.5% | 0.19% | 527 |
PsycINFO | 5475 | 29 | 21 | 52.5% | 0.38% | 261 |
SCI | 7048 | 40 | 12 | 30% | 0.17% | 587 |
CENTRAL | 1059 | 34 | 11 | 27.5% | 1.04% | 96 |
Google scholar | 1680 | 38 | 8 | 20% | 0.48% | 210 |
Scopus | 1173 | 39 | 8 | 20% | 0.68% | 147 |
Web of Science | 1095 | 40 | 8 | 20% | 0.73% | 137 |
ASSIA | 881 | 16 | 4 | 10% | 0.45% | 220 |
OVIDSP MEDLINE | 213 | 39 | 2 | 5% | 0.94% | 107 |
Citation searching all sources | 1789 | 40 | 9 | 22.5% | 0.5% | 199 |