Compare Access: Dialog versus PubMed for obtaining MEDLINE data.
In the realm of medical research, the choice of database can significantly impact the results of a study. A systematic review published in 2011 found that PubMed was slightly more sensitive for relevant articles than Dialog MEDLINE, particularly in the search for clinical trials, rheumatoid arthritis, and methotrexate [Katchamart et al., 2011].
This finding is noteworthy, especially in light of the new EU regulations (Regulation (EU) 2017/745) that require robust systematic searches to be run across multiple databases to capture all relevant articles for medical device studies.
The comparison between PubMed and Dialog MEDLINE was based on a consolidated search strategy, limited to children aged 18 or younger and a publication date range of Jan 1, 2012 to Feb 3, 2020. For the term "clinical trial[Publication Type]", PubMed retrieved more articles than Dialog MEDLINE. However, additional terms were added to the Dialog search to appropriately compare the two platforms.
When it comes to specific terms related to rheumatoid arthritis, such as "Arthritis, Rheumatoid", "Caplan Syndrome", "Felty Syndrome", "Rheumatoid Nodule", "Still's Disease, Adult-Onset", "Rheumatic Diseases", and "Methotrexate", PubMed consistently outperformed Dialog MEDLINE, retrieving more articles for each term.
To address this disparity, the search was conducted using the unexploded MeSH term 'Rheumatic Diseases [Mesh:noexp]' in Dialog, which resulted in a more balanced number of articles retrieved by both platforms.
It's worth noting that Dialog offers a unique advantage in that it allows for simultaneous searching in multiple databases, including MEDLINE, Embase, Biosis, and SciSearch. Additionally, duplicate articles are automatically removed in Dialog to save time and increase efficiency.
A comparison table was created to compare Dialog MEDLINE's performance with PubMed's in terms of individual components of the search strategy. However, the article does not provide new standalone facts that are not already covered in the earlier bullet points.
In conclusion, while both PubMed and Dialog MEDLINE have their strengths, the 2011 study suggests that for the search of clinical trials, rheumatoid arthritis, and related terms, PubMed may be a more effective tool. Under the new EU regulations, it's crucial to consider these findings when conducting systematic searches for medical device studies.
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