Negative pressure wound therapy: Potential publication bias caused by lack of access to unpublished study results data

Table 7 Sources of 11 published full-text articles on 12 RCTs: databases and trial registers

No	Full-text articles	Bibliographic databases				Trial registers
		MEDLINE	EMBASE	Cochrane Clinical Trials	CINAHL	CT.gov	NRR
1	Braakenburg 2006 [21]	+	+	+	-	-	-
2	Stannard 2006 [80]*	+	+	+	-	-	-
3	Vuerstaek 2006 [23]	+	-	+	-	+	-
4	Llanos 2006 [25]	+	+	+	-	-	-
5	Armstrong 2005 [22]	+	+	+	+	+	-
6	Moisidis 2004 [18]	+	+	+	-	-	-
7	Moues 2004 [20]	+	+	+	+	-	-
8	Eginton 2003 [17]	+	+	+	-	-	-
9	Wanner 2003 [24]	+	+	+	-	-	-
10	Ford 2002 [30]	+	+	+	-	-	-
11	Joseph 2000 [19]	-	-	+	+	-	-
		10	9	11	3	2	0

* Stannard 2006 [80]: one article presenting preliminary results of 2 ongoing RCTs [40,41].
CT.gov: ClinicalTrials.gov (United States); NRR: National Research Register (United Kingdom National Health System); RCT: randomised controlled trial

ISSN: 1471-2288