Definition: The number of manuscripts accepted for publication compared to the total number of manuscripts submitted in one year. The exact method of calculation varies depending on the journal. Journals with lower article acceptance rates are regarded as more prestigious.
Check the publisher's website for the journal to see if the acceptance rates are listed.
E-mail the journal's editor to request the acceptance rates.
The following link is to a page from the Health Sciences Library pertaining to journal acceptance rates in health science journals.