Hi. Please can you tell me whether the PPA has data on how frequently various drugs are prescribed? I am planning a study of sound-alike drug names to better understand what makes them so. Prescription frequency would be a useful measure of which drug names are commonly used and which are used less often, which is likely to be one factor affecting drug name confusions. Can you tell me whether I could get information on prescription frequency from the PPA (preferably in some computer-readable electronic format), or if not, can you suggest who might have such information? Thanks.