Detailing has become less efficient as the number of sales representatives has more than doubled between 1993 and 2001.
In 1993, the major pharmaceutical companies employed approximately 38,000 sales representatives.
By 2001, this figure more than doubled to 81,500. At the same time, there has only been a marginal
increase (17%) in the total number of calls made during this eight-year period in which contacts
leading to message communication only increased 5%. As a result, the return-on-investment (ROI) from
detailing has dropped from $3.34 for every dollar invested to $1.94/$1.00.
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