Table 1

Aspects of queries sent to PubMed.

Aspects

All queries (N = 3205)


n(%)


AND used *

1409(44)

OR used *

22(0.7)

NOT used *

6(0.2)

wildcard used †

65(2)

Mesh or Limits used ‡

252(8)

Query result positive §

2521(79)

Abstract selected ||

999(31)

Full text selected ||

456(14)


* Boolean operators. † Asterisk functions as wildcard. ‡ All limits or Mesh terms were identified by the use of square brackets in a query. § One or more article titles retrieved by query. || Queries that resulted in the selection of abstract or full-text articles for further reading.

Hoogendam et al. BMC Medical Informatics and Decision Making 2008 8:42   doi:10.1186/1472-6947-8-42

Open Data