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
8368 Studies found for: subjects AND Double-blind | ( Map: United States )

Terms and Synonyms Searched:

Terms Search Results* Entire Database**
subjects 8,368 studies 90,539 studies
Study Participant 277 studies 4,181 studies
Double-blind 8,368 studies 37,461 studies
double-blinded 679 studies 4,079 studies
Double Masked Study 18 studies 56 studies
double mask 3 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