The online version of this article (https://doi.org/10.1186/s12874-017-0453-y) contains supplementary material, which is available to authorized users.
Systematic reviews may provide less biased evidence than narrative reviews because they observe a strict methodology, similarly to primary studies. Hence, for clinical research questions, systematic reviews should be the study design of choice. It would be important to evaluate the prevalence and characteristics of narrative and systematic reviews published in prominent medical journals. Researchers and clinicians give great value to articles published in such scientific journals. This study sought to evaluate the prevalence and characteristics of narrative and systematic reviews in the five highest-ranked general medical journals and investigate the associations among type of review, number of citations, and impact factor (IF).
We surveyed the five highest-ranked medical journals (The New England Journal of Medicine, The Lancet, The Journal of the American Medical Association, The BMJ, and Annals of Internal Medicine) for narrative and systematic reviews published between June 2015 and June 2016. We independently selected and extracted the data from the reviews by strictly following the pre-determined eligibility criteria (Systematic and narrative reviews that focused on the management of diseases). We conducted regression analyses to investigate the associations among review type, number of citations, and IF. We also descriptively reported narrative reviews containing some methodology that might be reproducible.
Two hundred seventy-five reviews were included: 75 (27%) systematic; 126 (46%) narrative with some methodology reported, and 74 (27%) narrative reviews. In comparison to systematic reviews, narrative reviews were more frequently published in journals with higher IF (risk ratio [RR] = 1.114 (95% CI 1.080 to 1.149). Systematic reviews received more citations than narrative reviews (group formed by narrative and narrative with some methodology reported (RR = 0.985 95% CI 0.978 to 0.991).
Non-systematic evidence is the most prevalent type of evidence in reviews published in the five highest-ranked general medical journals. Narrative reviews were more frequently published in journals with higher IF. We recommend that journals limit their space for narrative information, and to address clinical research questions, these journals consider publishing systematic evidence exclusively.
Additional file 1: Excluded articles. List of articles excluded with reasons for exclusion. (DOCX 54 kb)
Faggion CM Jr, Málaga L, Monje A, Trescher AL, Listl S, Alarcón MA. The 300 most cited articles published in periodontology. Clin Oral Investig. 2016; [Epub ahead of print]
Lancet Oncology. http://thelancet.com/lanonc/information-for-authors/article-types-manuscript-requirements. Accessed 26 January 2017.
Lancet. http://www.thelancet.com/lancet/information-for-authors/article-types-manuscript-requirements. Accessed 26 January 2017.
Periodontology 2000. http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1600-0757. Accessed 24 January 2017.
CA: A Cancer Journal for Clinicians. http://onlinelibrary.wiley.com/journal/10.3322/(ISSN)1542-4863. Accessed 24 January 2017.
Lee KP, Boyd EA, Holroyd-Leduc JM, Bacchetti P, Bero LA. Predictors of publication: characteristics of submitted manuscripts associated with acceptance at major biomedical journals. Med J Aust. 2006;184:621–6. PubMed
Page MJ, Shamseer L, Altman DG, Tetzlaff J, Sampson M, Tricco AC, Catalá-López F, Li L, Reid EK, Sarkis-Onofre R, Moher D. Epidemiology and reporting characteristics of systematic reviews of biomedical research: a cross-sectional study. PLoS Med. 2016;13:e1002028. doi: 10.1371/journal.pmed.1002028. CrossRefPubMedPubMedCentral
Cochrane Glossary. http://community.cochrane.org/glossary. Accessed 04 September 2017.
Page MJ, Altman DG, Shamseer L, McKenzie JE, Ahmadzai N, Wolfe D, Yazdi F, Catalá-López F, Tricco AC, Moher D. Reproducible research practices are underused in systematic reviews of biomedical interventions. J Clin Epidemiol. 2017; doi: 10.1016/j.jclinepi.2017.10.017. [Epub ahead of print]
Wasiak J, Tyack Z, Ware R, Goodwin N, Faggion CM Jr. Poor methodological quality and reporting standards of systematic reviews in burn care management. Int Wound J. 2017;14:754–63
Wasiak J, Shen AY, Ware R, O'Donohoe TJ, Faggion CM Jr. Methodological quality and reporting of systematic reviews in hand and wrist pathology. J Hand Surg Eur Vol. 2017;42:852–56
- A survey of prevalence of narrative and systematic reviews in five major medical journals
Clovis Mariano Faggion Jr
Nikolaos P. Bakas
- BioMed Central
Neu im Fachgebiet AINS
Meistgelesene Bücher aus dem Fachgebiet AINS
Mail Icon II