COVID-19 is an emerging, rapidly evolving situation.
Get the latest public health information from CDC:

Get the latest research information from NIH: Menu
Open or close the search fields display
15799 Studies found for: subjects AND Double-blind

Terms and Synonyms Searched:

Terms Search Results* Entire Database**
subjects 15,799 studies 89,340 studies
Study Participant 473 studies 4,089 studies
Double-blind 15,799 studies 37,046 studies
double-blinded 1,360 studies 4,021 studies
Double Masked Study 27 studies 56 studies
double mask 4 studies 6 studies
Double Masked Method 1 studies 1 studies

-- No studies found
* Number of studies in the search results containing the term or synonym
** Number of studies in the entire database containing the term or synonym