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. 2019 Feb;25(2):10.18553/jmcp.2019.25.2.178. doi: 10.18553/jmcp.2019.25.2.178

TABLE 1.

Overall Price Inflation Rate Comparison

Drug Class Average WAC (Weighted) % Average 340B (Weighted) % Difference % WAC Difference, Weighted and Unweighted % 340B Difference, Weighted and Unweighted % Brand Name Generic
Average WAC % Average 340B % Difference % Average WAC % Average 340B % Difference %
Overall, all drugs 14.7 10.3 4.5 -1.3 -0.1 23.2 15.0 8.2 10.4 5.1 5.3
Overall, specialty drugs only 14.1 6.4 7.8 1.5 -0.5 14.5 7.8 6.7 19.6 22.9 -3.3
Antiretrovirals 4.5 -1.4 5.9a -1.1 -0.1 7.1 2.4 4.7 23.2 38.3 -15.0
Antineoplastics 21.1 21.0 0.1 1.2 -0.3 32.7 33.0 -0.2 18.2 33.1 -14.9
DMARDs 19.1 -3.2 22.3 7.8 5.4 21.7 -1.2 22.9 b b b
Hematopoietic agents 12.3 3.3 9.0 4.5 -1.3 12.3 3.3 9.0 b b b
Interferons -11.0 -11.5 0.5 0.6 0.0 -11.0 -11.4 0.5 b b b
Immunosuppressive agents 95.0 111.0 -16.0 -55.4 -10.9 28.7 -19.1 47.8 99.0 169.4 -70.4

aP < 0.10.

bNo purchasing records found in dataset.

340B = 340B Drug Discount Program; DMARD = disease-modifying antirheumatic drug; WAC = wholesale acquisition cost.