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Overview of primary study selection: comparison of trials included as RCTs by IQWiG |
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| Systematic review |
Search date |
Primary study* (database entry date)† |
Personal communication with review authors or other researchers at the publishing institutions |
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|
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| Joseph 2000 [20] |
Ford 2002 [17] |
Wanner 2003 [27] |
Eginton 2003 [16] |
Moues 2004 [23] |
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| (CIN: 2000-08; C) |
(M: 2002-07-27; E; C) |
(M: 2003-03-11; E; C) |
(M: 2003-10-10; E; C) |
(M: 2004-02-21; E; C; CIN) |
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|
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| Reviews considering RCTs and non-RCTs |
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| Costa/MUHC TAU 2005 [30] |
3/2005 |
RCT |
RCT |
RCT |
RCT‡ |
RCT |
Eginton 2003. PC (V. Costa): "We classified the study as a crossover design. If I had to discern between RCT and non-RCT, I would consider it an RCT." |
| IQWiG 2006 [8] |
5/2005 |
RCT |
RCT |
RCT |
RCT |
RCT |
- |
| Pham/ASERNIP-S 2006 update/[31] |
10/2004 (RCTs/non-RCTs) 7/2005 (RCTs) |
RCT |
RCT |
RCT |
RCT |
RCT |
- |
| Reviews considering RCTs |
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| Samson/AHRQ 2004 [29] |
6/2004 |
RCT |
RCT |
RCT |
RCT |
RCT |
- |
| OHTAC 2006 [32] |
3/2006 |
RCT |
RCT |
RCT |
Not reported (PC: excluded) |
RCT |
Eginton 2003. PC (Medical Advisory Secretariat): "This citation was retrieved from the literature search, but was excluded as only 10 patients were enrolled. The exclusion was not documented in the HTA." |
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*Unless otherwise noted, the language of publication (abstract and full text) is English. †Databases containing primary studies (entry date in database: yyyy-mm-dd). ‡ "Crossover; first treatment selected randomly"[30]. AHRQ: Agency for Healthcare Research and Quality; ASERNIP-S: Australian Safety and Efficacy Register of New Interventional Procedures – Surgical; C: The Cochrane Library; CIN: CINAHL; E: EMBASE; HTA: health technology assessment; IQWiG: Institut für Qualität und Wirtschaftlichkeit im Gesundheitswesen (Institute for Quality and Efficiency in Health Care); M: MEDLINE; MUHC TAU: McGill University Health Centre Technology Assessment Unit; OHTAC: Ontario Health Technology Advisory Committee; PC: personal communication; RCT: randomised controlled trial. | |||||||
Peinemann et al. BMC Medical Research Methodology 2008 8:41 doi:10.1186/1471-2288-8-41 |
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