CAM reported total promotion spending by the U.S. pharmaceutical industry as US$33.5 billion in their 2004 report, while IMS reported US$27.7 billion for the same year. The authors observed, however, important differences in figures according to each promotion category. By selectively using both sets of figures provided by IMS and CAM, in order to determine the most relevant data for each category, and adjusting for methodological differences between the ways IMS and CAM collect data, the authors arrived at US$57.5 billion for the total amount spent on pharmaceutical promotion in 2004. The industry spent approximately US$61,000 in promotion per physician during 2004, according to Gagnon.
“Even our revised promotion figure for 2004 is apt to be understated, as there are other promotion avenues that are not likely to be taken into consideration by IMS or CAM, such as ghost-writing and off-label promotion,” says Gagnon. “Also, seeding trials, which are designed to promote the prescription of new drugs, may be allocated to other budget categories.”