193 ICRAV 2026 VETERINARY SESSION 4 NOTES As a limitation of this study, both Standardbred and Thoroughbred data were included, and further data collection is needed to fully ascertain potential breed-specific effects. Moreover, this POP model also enabled relatively accurate Bayesian estimation of individual withdrawal times (WT). Clinicians could apply this Bayesian approach to making informed WT recommendations for horses when sufficient data is available. While existing non-POP statistical models remain viable, they may require a more conservative approach to WT estimation than Bayesian methods.
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