ABSTRACT
In vitro dissolution profile has been shown to be correlated with the drug absorption and has often been considered as a metric for assessing in vitro bioequivalence between a test product and corresponding reference one. Various methods have been developed to assess the similarity between two dissolution profiles. In particular, similarity factor has been reviewed and discussed extensively in many statistical articles. Although the
lacks inferential statistical properties, the estimation of
and its various modified versions were the most widely used metric for comparing dissolution profiles. In this paper, we investigated performances of the naive
estimate method, bootstrap
confidence interval method and bias corrected-accelerated (BCa) bootstrap
confidence interval method for comparing dissolution profiles. Our studies show that naive
estimate method and BCa bootstrap
confidence interval method are unable to control the type I error rate. The bootstrap
confidence interval method can control the type I error rate under a specific level. However, it will cause great conservatism on the power of the test. To solve the potential issues of the previous methods, we recommended a bootstrap bias corrected (BC)
confidence interval method in this paper. The type I error rate, power and sensitivity among different
methods were compared based on simulations. The recommended bootstrap BC
confidence interval method shows better control of type I error than the naive
estimate method and BCa bootstrap
confidence interval method. It also provides better power than the bootstrap
confidence interval method.
Acknowledgement
The authors would like to thank Dr. Lei Nie for very helpful comments leading to improvements of this paper.
Disclosure statement
No potential conflict of interest was reported by the authors.
Disclaimer
Yi Tsong, this article reflects the views of the authors and should not be construed to represent FDA’s views or policies.