Hello,? When I try to run the following code using the package Easypubmed, I get a null result -?> batch_pubmed_download(query_7)NULL #query_7 <- "Cardiology AND randomizedcontrolledtrial[Filter] AND 2011[PDAT]" However, the exact same search string yields 668 results on Pubmed.? I am unable to figure out why this is happening. If I use the search string?"Cardiology AND 2011[PDAT]" then it works just fine.? Any help would be?greatly appreciated Thank you!? [[alternative HTML version deleted]]
?Okay, the following search string resolved my issue? -?
"Cardiology AND randomized controlled trial[Publication type] AND
2011[PDAT]"
Thank you!
On Tuesday, 3 August, 2021, 02:21:38 pm GMT-4, bharat rawlley via R-help
<r-help at r-project.org> wrote:
Hello,?
When I try to run the following code using the package Easypubmed, I get a null
result -?> batch_pubmed_download(query_7)
NULL
#query_7 <- "Cardiology AND randomizedcontrolledtrial[Filter] AND
2011[PDAT]"
However, the exact same search string yields 668 results on Pubmed.?
I am unable to figure out why this is happening. If I use the search
string?"Cardiology AND 2011[PDAT]" then it works just fine.?
Any help would be?greatly appreciated
Thank you!?
??? [[alternative HTML version deleted]]
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and provide commented, minimal, self-contained, reproducible code.
[[alternative HTML version deleted]]
> On Aug 3, 2021, at 11:20 AM, bharat rawlley via R-help <r-help at r-project.org> wrote: > > Hello, > When I try to run the following code using the package Easypubmed, I get a null result - >> batch_pubmed_download(query_7) > NULL > #query_7 <- "Cardiology AND randomizedcontrolledtrial[Filter] AND 2011[PDAT]" > However, the exact same search string yields 668 results on Pubmed.Did you try with: 'Cardiology AND "randomized controlled trial"[Filter] AND 2011[PDAT]' DAVID.> > > I am unable to figure out why this is happening. If I use the search string "Cardiology AND 2011[PDAT]" then it works just fine. > Any help would be greatly appreciated > Thank you! > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code.