The plaintiffs in a class action alleged that a large pharmaceutical company provided false and misleading information about the efficacy and safety of its products. Mr. Johnson worked with counsel for the defendant and academic experts to advise on issues of class certification, alleged impact of advertising messages, and economic damages. Empirical analysis showed that the information at issue affected alleged class members differently, claims regarding advertising were unsubstantiated, and plaintiffs failed to show evidence of any economic damages resulting from the challenged behavior.