In many countries, the data cover all pharmaceutical consumption. However, several countries provide data covering only the community pharmaceutical market or the reimbursed pharmaceutical market.
The share of generic market expressed in value can be the turnover of pharmaceutical companies, the amount paid for pharmaceuticals by third-party payers, or the amount paid by all payers (third-party and consumers). The share of generic market in volume can be expressed in DDDs or as a number of packages/ boxes or standard units.