The following queries were executed in 8 bibliographic databases on May 30, 2020.
| Database | Query | Number of records |
|---|---|---|
| CINAHL Plus with full text (EBSCOHost) | (MH "Hepatic Vein Thrombosis") Date: 12-6-2020 Export: Share > E-mail a link to download exported results. RIS format. |
358 |
| Cochrane Library (Trials) | Title Abstract Keywords: (portal vein thrombosis) OR (portal venous thrombosis) OR (portal vein obstruction) OR (portal venous obstruction) Date: 30-5-2020 |
482 |
| EMBASE (Ovid) | exp portal vein thrombosis/ Date: 13-6-2020 Export: Format RIS, Fields: Complete reference (Not: Format: EndNote because Article Number information is not imported) |
11,452 |
| EMBASE.com | portal vein thrombosis/ Date: 16-6-2020 Export: ??? |
11,300 |
| Medline (Ovid) | exp Thrombosis/ limit 1 to (clinical trial, all or consensus development conference or guideline or randomized controlled trial or "review" or "systematic review") limit 2 to "core clinical journals (aim)" Query is intentionally different from PubMed query to create some, but not complete overlap Date: 30-5-2020 |
3,593 |
| PsycINFO (Ovid) | exp thromboses/ Export: Complete reference Date: 12-6-2020 |
903 |
| PubMed | (portal vein thrombosis) OR (portal venous thrombosis) OR (portal vein obstruction) OR (portal venous obstruction) Date: 30-5-2020 |
10,433 |
| Scopus | Article title, Abstract, Keywords: (portal vein thrombosis) OR (portal venous thrombosis) OR (portal vein obstruction) OR (portal venous obstruction) Date: 1-6-2020 Export: (The export uses all Citation information fields, and from the Bibliographic information fields: Serial identifiers (e.g. ISSN) and Abbreviated source title. The Abstract field was not downloaded) Imported into EndNote as RIS format, not with the Scopus import filter (does not import C7 field (Article number)) |
16,942 |
| Web of Science (1975-...) | Topic: (portal vein thrombosis) OR (portal venous thrombosis) OR (portal vein obstruction) OR (portal venous obstruction) Date: 1-6-2020 Export: Full record |
8,665 |
| Total | 52,828 |
All records were imported into an EndNote X9 3.3 (Bld 13966) database. If the files were imported manually (File > Import ...), the following options were used:
The following fields were cleared in the EndNote database:
The databases were imported in the following order, each database sorted on Record number:
The complete EndNote DB was sorted on the Author field: the complete ordering (see: Tools / Sort library ...) was by Author, Year, Record number, which generally puts the PubMed records before the EMBASE OVID, ...
| field | special cases | deduplication results |
|---|---|---|
| Authors | (empty): 150 records "Anonymous,": 78 records |
96 merged successfully 22 merged successfully |
| Publication year | (empty): 71 records | 44 merged successfully |
| Title | (empty): 3 records | 1 merged |
| Journal | (empty): 29 records | 4 merged |
| Pages | (empty): 1542 records AND Article Number: 569 |
977 merged successfully 490 merged successfully |
| Article number | NOT empty: 1112 records AND without Pages: 569 records |
945 merged successfully 490 merged successfully |
| Reference Type | Book: 3 Book Section: 143 Conference Proceedings: 6 Generic: 13 Journal Article: 52460 Serial: 23 |
Book: 0 merged Book Section: 6 merged Conference Proceedings: 0 merged Generic: 2 Journal Article: 38401 Serial: 12 |
Checking for false positives outside the manually checked validation set (1585 records):
The False Positive result was: same year - same authors - same journal - similar title - different startpages but same doi
AND the DOI was for the whole conference abstracts issue.
Assuming that:
looked in the markMode database for records:
ordered on label, manually checking the titles. No other cases found.
TODO: Test is incomplete: start page could also be empty. But that would mean checking 29.000 records! (Maybe putting the records in a relational DB could help. OR: Check the records with DOIs which are not unique: 1880 DOIs, see Excel)
See Test results - details for a description of this test database.
No details found about the content. Most records are imported from EMBASE (OVID), PubMed en Web of Science? Some records are imported more than once from the same database?
Fields cleared: Abstract, Accession number, Author address, Keywords, Notes
| field | special cases | deduplication results |
|---|---|---|
| Authors | (empty): 3 records "Anonymous,": 127 records |
1 (100%) merged successfully 1 merged successfully |
| Publication year | (empty): 21 records | 18 merged successfully |
| Title | (empty): 1 record | 0 merged |
| Journal | (empty): 5 records | 1 merged |
| Pages | (empty): 1323 | 534 merged successfully |
| Article number | NOT empty: 242 AND without Pages: 206 |
186 merged successfully 155 |
| Reference Type | Book: 13 Book Section: 16 Journal Article: 15187 |
Book: 0 merged Book Section: 9 merged Journal Article: 6978 |