In the Original Investigation titled “Assessment of Variation in State Regulation of Generic Drug and Interchangeable Biologic Substitutions,”1 published online August 31, 2020, misclassification of some US states resulted from coding errors in the primary data file. The identified errors do not affect the primary finding, interpretations of the results, or conclusions. The article has been corrected online, and the corresponding author has offered an explanation for the errors in a Letter to the Editor.2
References
- 1.Sacks CA, Van de Wiele VL, Fulchino LA, Patel L, Kesselheim AS, Sarpatwari A. Assessment of variation in state regulation of generic drug and interchangeable biologic substitutions. JAMA Intern Med. Published online August 31, 2020. doi: 10.1001/jamainternmed.2020.3588 [DOI] [PMC free article] [PubMed] [Google Scholar]
- 2.Sarpatwari A. Corrections to assessment of variation in state regulation of generic drug and interchangeable biologic substitutions. JAMA Intern Med. Published online November 30, 2020. doi: 10.1001/jamainternmed.2020.6554 [DOI] [PubMed] [Google Scholar]