Table 10 The number of retrieved documents using OVID for the original and simplified boolean queries of Miscellaneous dataset.
From: Boolean versus ranked querying for biomedical systematic reviews
| Â | Tier 0 | |
|---|---|---|
Review | Orig | Simp |
1 | 628 | 14,244 |
2 | 1,691 | 96,797 |
3 | 31,552 | 22,213 |
4 | 4,813 | 1,881 |
5 | 10 | 78,536 |
6 | 507 | 91,572 |
7 | 1,174 | 40,930 |
8 | 14,952 | 7,938 |
9 | 11 | 74,200 |
10 | 243 | 278,832 |
11 | 1,235 | 496,656 |
12 | 662 | 983 |