Table 1.
Search strings used in search strategy (as MeSH headings) and respective number of records found
| Search strings | Medline | Cinahl | Embase | Pubmed | Cochrane |
|---|---|---|---|---|---|
| Lumbar disc replacement | 19 | 22 | 23 | 168 | 21 |
| ‘Randomised controlled trial’ or ‘clinical trial’ or ‘cohort series’ or ‘retrospective studies’ | 165,759 | 20,358 | 101,608 | 674,194 | a |
| ‘Lumbar disc’ or ‘intervertebral disc’ or ‘joint prosthesis’ or ‘arthroplasty’ | 11,797 | 5,463 | 30,321 | 33,238 | a |
| Combinations | 48 | 20 | 108 | 29 | 21 |
| Total | 226 |
aSearch terms not used in this database