Walid F. Gellad, Niteesh K. Choudhry M.D., Ph.D., Mark W. Friedberg M.D.,M.P.P., M. Alan Brookhart Ph.D., Jennifer S. Haas, William H. Shrank M.D.
To determine whether retail prices for prescription drugs are higher in poorer areas.
The MyFloridarx.com website, which provides retail prescription prices at Florida pharmacies, and median ZIP code income from the 2000 Census.
We compared mean pharmacy prices for each of the four study drugs across ZIP code income groups. Pharmacies were classified as either chain pharmacies or independent pharmacies.
Prices were downloaded in November 2006.
Across the four study drugs, mean prices were highest in the poorest ZIP codes: 9 percent above the statewide average. Independent pharmacies in the poorest ZIP codes charged the highest mean prices.
Retail prescription prices appear to be higher in poorer ZIP codes of Florida.