• Bug fix for the approximate Firth test when ultra-rare variants (MAC<50) are being tested:
  • Fix to the calculation of the null deviance used in the likelihood ratio test.
  • BETA estimates remain unchanged, but p-value will change (SE will also change if using --firth-se).
  • This fix also addresses convergence failures with Firth.
• Improvements to address convergence failures & speed-up exact Firth by using warm starts based on null model with just covariates.