Table 2.
Database table.
| Database | Date search complete | Papers identified and titles screened | Duplicate papers | Result and total number of abstracts screened | Full papers accessed | Studies included (N) |
| PubMed via the National Center for Biotechnology Information | April 3, 2017 | 60 | 10 | 37 | 1 | 1 |
| CINAHL via EBSCO | April 3, 2017 | 23 | 2 | 5 | 5 | 1 |
| Scopus via Elsevier | April 3, 2017 | 118 | 8 | 35 | 11 | 3 |
| OVID nursing | April 3, 2017 | 3 | 0 | 0 | 0 | 0 |
| MEDLINE via EBSCO | April 3, 2017 | 1 | 1 | 1 | 1 | 0 |
| The Cochrane Library | April 3, 2017 | Basic search: 9 | 3 | 3 | 0 | 0 |
| April 3, 2017 | Advanced search: 99 | 6 | 22 | 8 | 1 | |
| The King’s Fund | April 3, 2017 | Basic search: 3 | 1 | 3 | 1 | 3 |
| June 9, 2017 | Advanced search: 50; 55; 52 | 3 | 12; 10; 23 | 5; 12 | 3 | |
| Additional searches | April to August 2017 | 20 | 0 | 20 | 8 | 2; 1 (to be published) |
| Total | —a | 493 | 34 | 171 | 66 | 13 |
aNot applicable.