#### Trial-to-trial variability

Trial-to-trial variability = the variability of the mean lameness measure between two trials. I.e. is the measure repeatable? Trial-to-trial variability is assessed by comparing the lameness measures between two trials and whether they are within the 95% confidence intervals of repeatability.  If a particular measure in two back-to-back trials is not within the 95% CI, then that lameness is not stable.