Greetings all!
Recently, I was reading a clinical trial paper that reported some follow up outcomes for only part of the full sample undergoing a trial. Within the paper, they referred to their Cliniclatrials.gov (CT.gov) NCT number , which was the registry for the full sample trial. When visiting the trial's NCT on CT.gov , I noticed that; at the "More information" section which should include the URL to any publication on this trial; the URL to the publication I was reading was not included.
Which had me thinking of the many times I assumed that a trial still has no publications when the "More information" section didn't have any URLs and the study results section was still empty.
Therefore, could anyone please elaborate how to 100% make sure whether a trial on Clinicaltrials. gov or the WHO ICTRP or the EU clinical trials registry , has a publication or not?
(Side note: I tried searching the NCT identifier on pubmed; and only one publication was found)
In his situation either you directly approach Sponsor of the clinical trial conducted or wait for some times. Publications are generally done couple of years later once the trial is completed as data compilation and assessment is a mammoth task so might you will get the complete results in the form of publication later on.
Dear Hassan,
Every 6 months CT.gov send trial investigators e-mails requiring trial updates, however, there is no tool to guarantee that investigators effectively update their registries. Trials registry aims to increase transparency and to avoid reporting bias, however, investigators still fail to report trial results, typically those that show no effect, or outcomes, typically those that may be harmful or for which no effect was observed. There is no such 100% sure option. I suggest you to contact investigators asking for the results publication. Even so, you can remain without answer.
Best regards,
Erica
Clinical trial are conducting very confidentially not mention any were because investment is very high for clinical trails
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