Pharmacy Benefits and the Use of Drugs by the Chronically Ill
Jan 1, 2004
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Many health plans are raising beneficiaries' co-payments for drugs to discourage use of more-expensive pharmaceuticals and to reduce overall spending on drugs. How does cost sharing affect drug use? A RAND Corporation team linked pharmacy claims data with health plan benefit designs from 30 employers and 52 health plans. The study included nearly 530,000 privately insured beneficiaries aged 18–64 years.
The figure shows how doubling co-payments affects use of the ten most common therapeutic classes of drugs in terms of dollars spent in 2000.
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