Table 2.
Search results
| Database | Search dates | Total hits |
| PsycINFO | 1972- | 53 |
| ERIC | 1966- | 6 |
| Academic Search Premier | 1965- | 205 |
| Health Source: Nursing/Academic | 1985- | 141 |
| ScienceDirect | 1964- | 149 |
| Social Science full text | 1983- | 29 |
| Social science citation expanded, social science citation index, arts and humanities citation index | 1975- | 889 |
| Medline | 1966- | 1772 |
| CINAHL | 1982- | 321 |
| Pre-CINAHL | Current | 1 |
| Dissertation abstracts | 189-- | 57 |
| Sociological abstracts, social services abstracts, PAIS international | 1963-, 1972-, 1980- | 17 |
| EMBASE | 1966- | 2349 |
| PapersFirst | 1993- | 12 |
| Pubmed | 1966- | 1813 |
|
Total |
7814 |