Table 1.
Characteristics of reports investigating reasons for non-publication
| Report | Published/Total Abstracts (%) | Type sample | Type studies described in abstracts | Conference Focus | Country of corresponding author |
|---|---|---|---|---|---|
| Bhandari 2002 [9,10] | 231/465 (49.7) | All abstracts | Clinical and basic science | Orthopedic Surgery | Canada |
| Camacho 2005 [11] | 185/275 (67.3) | All abstracts describing Phase I trials | Phase I trials | Oncology | USA |
| De Bellefeuille 1992 [12] | 63/81 (77.8) | Random sample of all abstracts | Not reported | Oncology | Canada |
| Dirk 1996 [13] | 80/147 (54.4) | All abstracts by faculty of a single department | Not reported | Anesthesiology | USA |
| Drury 2012 [15] | 606/909 (66.7) | All abstracts | Not reported | Cardiovascular Surgery | UK |
| Dyson 2006 [14] | 208/283 (73.5) | All abstracts | Not reported | Veterinary anesthesiology | Canada |
| Harvey 2010 [16] | 122/442 (27.6) | All abstracts | Not reported | Medical library science | USA |
| Hashkes 2003 [17] | 134/331 (40.5) | All abstracts | Clinical and basic science | Rheumatology | USA |
| Hoeg 2009 [18] | 361/559 (64.6) | All abstracts desriibing Phase II Trials | Phase II Trials | Oncology | USA |
| Hopewell 2001 [19] | 39/91 (42.8) | All abstracts | Methods studies | Methodology | UK |
| Jourbert 2004 [20] | NR/102 | Abstracts classified as dompetition winners | Clinical and basic science | General Medicine | South Africa |
| Kottachchi 2010 [3] | 64/82 (78.0) | All abstracts describing RCTs | RCTs | Gastroenterology | Canada |
| Klassen 2002 [21,22] | 248/447 (55.4) | All abstracts describing RCTs | RCTS | Pediatrics/Child Health | Canada |
| Krzyanowska 2003 [23] | 415/510 (81.4) | All abstractrs describing RCTs | RCTS | Oncology | Canada |
| Montane 2007 [24] | 71/248 (28.6) | All abstracts | Clinical | Pharmacology | Spain |
| Nader 2009 [25] | 34/125 (27.2) | Random sample of all abstracts | Clinical | Geographic Medicine | USA |
| Oliveira 2009 [26] | 122/313 (39.0) | All abstracts | Clinical and basic science | Urology | Brazil |
| Sanossian 2006 [27] | 220/353 (62.3) | All abstracts | Clinical | Neurology | USA |
| Scherer 1994 [28] | 61/93 (65.6) | All abstracts describing RCTs | RCTs | Vision | USA |
| Seaton 1983 [29] | 202/625 (32.3) | All abstracts | Not reported | Communication disorders | USA |
| Snedecker 2010 [30] | 70/149 (47.0) | All abstracts describing trials | Trials | Food safety research | Canada |
| Stöcker 2009 [31] | 200/368 (54.3) | All abstracts | Not reported | General Practice | Germany |
| Tam 2011 [32] | 643/709 (90.7) | All abstracts describing RCTs | RCTS | Oncology | Canada |
| Timmer 2002 [33] | 392/863 (45.4) | Random sample of all abstracts | Clinical and basic science | Gastroenterology | Canada |
| Vuckovic 2001 [34] | 42/63 (66.7) | All | Not reported | Oncology | Serbia |
| Weber 1998 [35] | NR/492 | All | Clinical and basic science | Emergency Medicine | USA |
| Wong 2010 [36] | NR/8 | Identified for a systematic review | Clinical | Urology | UK |