Table 5

Sources of conference abstracts and unpublished study information on 28 RCTs: databases, trial registers, and systematic reviews
No
 Abstracts or other sources
 Bibliographic databases
 Trial registers
 Systematic reviews




MEDLINE, EMBASE or CINAHL
 Cochrane Clinical Trials
 CT.gov
 NRR
 Evans 2001 [83]
 Samson 2004 [9]
 Pham 2006 [68]
 Fisher 2003 [84]; Higgins 2003 [85]; Costa 2005 [67]; OHTAC 2006 [10]
1
 Vuerstaek [74]
 -
 +
 -
 -
 -
 +
 -
 -
2
 No abstract*
 -
 -
 -
 -
 -
 -
 -
 -
3
 Obdeijn [75]
 -
 +
 -
 -
 -
 +
 -
 -
4
 Payne [76]
 -
 +
 -
 -
 -
 +
 -
 -
5
 Moues [77]
 -
 +
 -
 -
 -
 +
 -
 -
6
 Heath [78]
 -
 +
 -
 -
 +
 -
 +
 -
7
 No abstract†
 -
 -
 -
 -
 -
 -
 -
 -
8
 No abstract‡
 -
 -
 -
 -
 -
 -
 -
 -
9
 Joseph [79]
 -
 +
 -
 -
 -
 -
 -
 -
10
 Adams [26]
 -
 -
 -
 +
 -
 -
 +
 -
11
 Fryer [27]
 -
 -
 +
 -
 -
 -
 +
 -
12
 McCarthy [28]
 -
 -
 -
 +
 -
 -
 +
 -
13
 Walker [29]
 -
 -
 -
 +
 -
 -
 +
 -
14
 No abstract§
 -
 -
 -
 -
 -
 -
 -
 -
15
 No abstract||
 -
 -
 -
 -
 -
 +
 -
 -
16
 Bayer [31]
 -
 +
 -
 -
 -
 +
 -
 -
17
 Greer [33]
 -
 +
 -
 -
 +
 -
 +
 -
18
 Orgill [34]
 -
 +
 -
 -
 -
 +
 -
 -
19
 Stannard [35]
 -
 +
 -
 -
 -
 +
 -
 -
20
 Armstrong [36]
 -
 +
 -
 -
 -
 +
 -
 -
21
 McCarthy [37]
 -
 -
 +
 -
 -
 -
 -
 -
22
 Molnar [38]
 -
 +
 -
 -
 -
 +
 -
 -
23
 Niezgoda [39]
 -
 +
 -
 -
 -
 +
 -
 -
24
 Stannard [40]
 -
 +
 -
 -
 -
 +
 -
 -
25
 Stannard [41]
 -
 +
 -
 -
 -
 +
 -
 -
26
 Foo [42]
 -
 +
 -
 -
 -
 +
 -
 -
27
 Gupta [43]
 -
 +
 -
 -
 -
 -
 -
 -
28
 Lantis [44]
 -
 +
 -
 -
 -
 +
 -
 -


0
 18
 2
 3
 2
 15
 6
 0

* No preceding abstract was identified concerning the full-text article by Llanos 2006 (Tables 7–9).

† No preceding abstract was identified, but information by the manufacturer KCI was provided concerning the full-text article by Eginton 2003 (Tables 7–9).

‡ No preceding abstract was identified, but information by the manufacturer KCI was provided concerning the full-text article by Wanner 2003 (Tables 7–9).

§No preceding abstract was identified, but information by the manufacturer KCI was provided concerning the full-text article by Ford 2002 (Tables 7–9).

|| No preceding abstract was identified, but information by the manufacturer KCI was provided concerning this discontinued study KCI ID VAC 2001–02.

CT.gov: ClinicalTrials.gov (United States); NRR: National Research Register (United Kingdom National Health System); RCT: randomised controlled trial

Peinemann et al. BMC Medical Research Methodology 2008 8:4   doi:10.1186/1471-2288-8-4