Table 1.
Relative importance of grey literature as used by ICHSR and HCT at the National Library of Medicine [48]
| 5 | 4 | 3 | 2 | 1 |
|---|---|---|---|---|
| Working papers | Data evaluations | Speeches | Newsletters | Pamphlets |
| Committee reports | Foundation reports | Annual reports | Biographies | Protocols |
| Testimony | Government reports | Presentations | Bulletins | Guidelines |
| Conference proceedings | Grantee publications | Grantee reports | Slide presentations | Poster sessions |
| Non-commercially published conference papers | ||||
| Reports | Webcasts | Foundation financial statements | Meeting agendas | |
| Special reports | Theses | Translations | ||
| Technical specifications and standards |