The quality of research synthesis in surgery: the case of laparoscopic surgery for colorectal cancer.

Systematic Reviews
Guillaume MartelDean A Fergusson

Abstract

Several systematic reviews and meta-analyses populate the literature on the effectiveness of laparoscopic surgery for colorectal cancer. The utility of this body of work is unclear. The objective of this study was to synthesize all such systematic reviews in terms of clinical effectiveness, to appraise their quality, and to determine whether areas of duplication exist across reviews. Systematic reviews comparing laparoscopic and open surgery for colorectal cancer were identified using a comprehensive search protocol (1991 to 2008). The primary outcome was overall survival. The methodological quality of reviews was appraised using the Assessment of Multiple Systematic Reviews (AMSTAR) instrument. Abstraction and quality appraisal was carried out by two independent reviewers. Reviews were synthesized, and outcomes were compared qualitatively. A citation analysis was carried out using simple matrices to assess the comprehensiveness of each review. In total, 27 reviews were included; 13 reviews included only randomized controlled trials. Rectal cancer was addressed exclusively by four reviews. There was significant overlap between review purposes, populations and, outcomes. The mean AMSTAR score (out of 11) was 5.8 (95% CI: 4.6 to ...Continue Reading

References

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Citations

Feb 2, 2016·Journal of Psychiatric Research·Shayden BryceSusan Rossell
Jul 31, 2013·Colorectal Disease : the Official Journal of the Association of Coloproctology of Great Britain and Ireland·T X YangT C Chua
Mar 4, 2014·Journal of Clinical Epidemiology·Dawid PieperMichaela Eikermann
Apr 9, 2014·Journal of Clinical Epidemiology·Padhraig S FlemingNikolaos Pandis
Mar 21, 2013·Journal of Clinical Epidemiology·Juan P BritoVictor M Montori
Aug 9, 2016·The Journal of Clinical Hypertension·Xin Yin WuVincent C H Chung
Oct 19, 2016·International Journal of Technology Assessment in Health Care·Jessica Tajana Mattivi, Barbara Buchberger
May 7, 2020·BMJ Quality & Safety·Joanna AbrahamThomas Kannampallil

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