Weibull Shape Parameter Tests for Signal Detection // Implementation of Bayesian and frequentist Weibull Shape Parameter (WSP) tests for signal detection in pharmacovigilance based on right-censored time-to-event data to flag associations between drugs and adverse events. The WSP test is based on the assumption of constant hazard reflected by a Weibull type distribution with shape parameters equal to one. Based on the shape parameter estimates (posterior distribution or point estimate), the WSP test method performs a hypothesis test on each shape parameter and combines them to a decision on the presence of a signal. Methods described in Sauzet and Cornelius (2022) doi:10.3389/fphar.2022.889088, Sauzet et al. (2024) doi:10.1007/s40264-024-01460-2, and Dyck and Sauzet (2025) doi:10.48550/arXiv.2412.05463.