They are usually one of the easiest study types to find in any nursing or medical database. To our surprise, Cochrane CENTRAL did not identify any unique included studies that had not been retrieved by the other databases, not even for the five reviews focusing entirely on RCTs. Other specialized databases, such as CINAHL or PsycINFO, add unique references to some reviews where the topic of the review is related to the focus of the database. For nine of these reviews, all the studies that had been included in the final synthesis were available in the CINAHL database, so it could have been possible to identify all the included studies using just this one database, while for an additional 21 reviews (49 %), 80 % or more of the included studies were available in CINAHL. J Immigr Minor Health. We searched PubMed in July 2016 for all reviews published since 2014 where first authors were affiliated to Erasmus MC, Rotterdam, the Netherlands, and matched those with search registrations performed by the medical library of Erasmus MC. The four databases that had retrieved the most unique references (Embase, MEDLINE, Web of Science, and Google Scholar) were investigated individually and in all possible combinations (see Table4). 2015;68:61726. Our conclusion that Web of Science and Google Scholar are needed for completeness has not been shared by previous research. Searching additional databases except PubMed are necessary for a systematic review. HR;QBYVCU-7;-7O?zIo =IBK OH)k11H?3xQao7~Z| WB has received travel allowance from Embase for giving a presentation at a conference. A comparison of the performance of seven key bibliographic databases in identifying all relevant systematic reviews of interventions for hypertension. BMC Med Res Methodol. At Erasmus MC, search strategies for systematic reviews are often designed via a librarian-mediated search service. Using data sources beyond PubMed has a modest impact on the results of systematic reviews of therapeutic interventions. A total of 58 published systematic reviews were included, totaling 1746 relevant references identified by our database searches, while 84 included references had been retrieved by other search methods. Did you know that with a free Taylor & Francis Online account you can gain access to the following benefits? Ws"30z@+RY{"+NTzXnnf.ote{X-C.!0rxY_K+LSA12"fDAKJtk/FQS. Bramer WM, Giustini D, Kramer BMR. Journal coverage, which spans from the 1800s to present, includes international material selected from around 2,400 periodicals in dozens of languages. Subject-specific databases such as CINAHL, PsycINFO, and SportDiscus only retrieved additional included references when the topic of the review was directly related to their special content, respectively nursing, psychiatry, and sports medicine. author reply e140. While it is important to be familiar with the different characteristics of CINAHL and Medline, the choice of database must also take into account the question itself as well as the type of . Nursing & Allied Health SourceTM provides users with reliable healthcare information covering nursing, allied health, alternative and complementary medicine. Google Scholar, Zheng MH, Zhang X, Ye Q, Chen YP. Handwashing OR "Hand Washing" OR "Hand Rubs" OR "Hand Disinfection". Because precision is defined as the number of relevant references divided by the number of total results, we see a strong correlation with the total number of results. Comparing International Pharmaceutical Abstracts and MEDLINE. For the databases that retrieved the most unique included references, we calculated the number of references retrieved (after deduplication) and the number of included references that had been retrieved by all possible combinations of these databases, in total and per review. Lastly, we checked whether the reviews described limiting their included references to a particular study design. WB designed the searches used in this study and gathered the data. 2017;33:21724. 2016 Feb 9;5:27. doi: 10.1186/s13643-016-0197-5. Once validated and certified for inclusion, these OA journals are treated with high-quality subject indexing and sophisticated, precise/accurate full-text linking. This limiter box allows you to select specific article types. <>
A nursing qualitative systematic review required MEDLINE and CINAHL for study identification. See Fig. https://doi.org/10.1186/s13643-017-0644-y, DOI: https://doi.org/10.1186/s13643-017-0644-y. Almost all reviews (97%) reported a search in MEDLINE. Using the prospectively recorded results and the studies included in the publications, we calculated recall, precision, and number needed to read for single databases and databases in combination. Because this is a novel finding, we cannot conclude whether it is due to our dataset or to a generalizable principle. P?p~p[pL
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A recent paper tried to find an acceptable number needed to read for adding an additional database; sadly, however, no true conclusion could be drawn [20]. The one review where it was insufficient was about alternative medicine, specifically meditation and relaxation therapy, where one of the missed studies was published in the Indian Journal of Positive Psychology. Figure1 shows the percentages of reviews where a certain database combination led to a certain recall. We have not yet gathered enough data to be able to make a full comparison between Embase and Scopus. As our research is performed on systematic reviews, the main performance measure is recall. There are disadvantages to using multiple databases. PubMed Literature search parameters marginally improved the pooled estimate accuracy for ultrasound in detecting deep venous thrombosis. Whether a reference is available in a database is important, but whether the article can be found in a precise search with reasonable recall is not only impacted by the databases coverage. It is likely caused by difference in thesaurus terms that were added, but further analysis would be required to determine reasons for not finding the MEDLINE records in Embase. ; ; Until 2016, the most complete MEDLINE selection in Ovid still lacked the electronic publications that were already available in PubMed. This site needs JavaScript to work properly. Embase retrieved the most unique included references, followed by MEDLINE, Web of Science, and Google Scholar. The database itself is unfiltered, but includes many filtered items like systematic reviews. However, the combination with Google Scholar had a higher precision and higher median recall, a higher minimum recall, and a higher proportion of reviews that retrieved all included references. Based on these calculations, we estimate that the probability that this random set of reviews retrieved more than 95% of all possible included references was 40%. In 73 of these, the searches and results had been documented by the first author of this article at the time of the last search. Ahmadi M, Ershad-Sarabi R, Jamshidiorak R, Bahaodini K. Comparison of bibliographic databases in retrieving information on telemedicine. Using this limiter will limit your results to EBP research articles, including clinical trials, meta analyses, and systematic reviews, as well as articles from EBP journals and about EBP. Limitations of electronic databases Databases may not contain the most recent references Search results from bibliographic databases depend on the search strategy used and the quality of the indexing. pros and cons of cinahl database Categories. For all but one domain, the traditional combination of Embase, MEDLINE, and Cochrane CENTRAL did not retrieve enough included references. Note: With this limiter you will need to evaluate your results to determine what type of evidence each article contains. Lastly, access to databases is often limited and only available on subscription basis. Where should the pharmacy researcher look first? Health Inf Libr J. The search on substance abuse in pregnancy, not restricted to nursing literature, retrieved better results when searching both MEDLINE and EMBASE. In our analyses, we combined the results from MEDLINE in Ovid and PubMed (the subset as supplied by publisher) into one database labeled MEDLINE. 2005;51:8489. Ross-White A, Godfrey C. Is there an optimum number needed to retrieve to justify inclusion of a database in a systematic review search? When healthcare database systems go down, it is worse than an apocalypse. how to send secure email attachments in gmail. Preston L, Carroll C, Gardois P, Paisley S, Kaltenthaler E. Syst Rev. ProQuest Nursing & Allied Health Source provides abstracting and indexing for more than 1,050 titles, with over 875 titles in full-text, plus more than 12,300 full text dissertations representing the most rigorous scholarship in nursing and related fields. For four out of five systematic reviews that limited to randomized controlled trials (RCTs) only, the traditional combination retrieved 100% of all included references. Ignoring one or more of the databases that we identified as the four key databases will result in more precise searches with a lower number of results, but the researchers should decide whether that is worth the >increased probability of losing relevant references. Article This number however is not an answer to the question of a researcher performing a systematic review, regarding which databases should be searched. Accessibility However, searching databases is laborious and time-consuming, as syntax of search strategies are database specific. Of the combinations of two databases, Embase and MEDLINE had the best results (92.8%). Careers. Are MEDLINE searches sufficient for systematic reviews and meta-analyses of the diagnostic accuracy of depression screening tools? I;u?5Z=bL(lWh{d QrX". "N` ;:"Z,Ov;s90yz`
x:Na|8{4Bl9fxbRZk96L.00t4+a6.dx8Uc*$Ea=KhIn+4Byp0>*Wu$(3}sd6[J6\Lx%U In 23 reviews included in this research, Scopus was searched. Because of this major limitation, the question of which databases are necessary to retrieve all relevant references for a systematic review remains unanswered. Federal government websites often end in .gov or .mil. >/- 8CqD 0:J AT~Xr Bx:.}U_y>gEdUug1tXA
ed! Is the coverage of Google Scholar enough to be used alone for systematic reviews. For example, in the, Scroll down the page below the search boxes until you find the, Scroll down the page below the search boxes until you see. An official website of the United States government. See Table1 for definitions of these measures. However, the wide range of scope, topic, and criteria between systematic reviews and their related review types make it very hard to answer this question. [10] and van Enst et al. Based on these, we determined the percentage of reviews where that database combination had achieved 100% recall, more than 95%, more than 90%, and more than 80%. Optimal searches in systematic reviews should search at least Embase, MEDLINE, Web of Science, and Google Scholar as a minimum requirement to guarantee adequate and efficient coverage. In that case, Google Scholar might add value by searching the full text of articles. It is therefore important to search MEDLINE including the Epub Ahead of Print, In-Process, and Other Non-Indexed Citations references. One hundred and fifty-nine journals are uniquely indexed in BNI compared with the basic version of CINAHL. Syst Rev. A multi-disciplinary database, with more than 6,100 full-text periodicals, including more than 5,100 peer-reviewed journals. The aim of our research is to determine the combination of databases needed for systematic review searches to provide efficient results (i.e., to minimize the burden for the investigators without reducing the validity of the research by missing relevant references). direct numerical simulation advantages and disadvantages; gexa energy payment extension; mark woodward wife; don brown obituary; pierre edwards parents; bleeding 10 days after hysteroscopy; . The comparative recall of Google Scholar versus PubMed in identical searches for biomedical systematic reviews: a review of searches used in systematic reviews. 1990;23:58393. Google Scholar. For reviews in our study that included RCTs only, indeed, this recommendation was sufficient for four (80%) of the reviews. The SMART Imagebase is a unique, educational resource for students, educators, library patrons, and professionals in healthcare and news media. Beginning in May 2013, the number of records retrieved from each search for each database was recorded at the moment of searching. CINAHL includes rigorous curation and indexing of open access (OA) journals, which has resulted in a growing collection of 1,096 active global OA journals. We are not implying that a combined search of the four recommended databases will never result in relevant references being missed, rather that failure to search any one of these four databases will likely lead to relevant references being missed. Syst Rev. Thirty-seven references were found in MEDLINE (Ovid) but were not available in Embase.com. Lorenzetti DL, Topfer L-A, Dennett L, Clement F. Value of databases other than MEDLINE for rapid health technology assessments. For example, around a third of the reviews (37%) relied on the combination of MEDLINE and Embase. Fifty-one of these journals are UK publications. ERIC for example serves as the most comprehensive source of information containing more than 500,000 documents and journal articles from all areas of education. Stevinson C, Lawlor DA. Of the individual databases, Embase had the highest overall recall (85.9%). Many of the reviews were initiated by members of the departments of surgery and epidemiology. J Kerman Univ Med Sci. Subject-specific databases like PsycINFO only added unique references to a small percentage of systematic reviews when they had been used for the search. 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