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Development of the Horse Grimace Scale (HGS) as a Pain Assessment Tool in Horses Undergoing Routine Castration

Figure 3

Mean Horse Grimace Scale (HGS) scores pre and 8-hours post-procedure.

HGS scores are presented on the y-axis (±1 SE) for horses undergoing routine castration (A and B), and anaesthesia control group (C) with the pre and 8-hours post-procedure recordings on the x-axis (** P = 0.000).

Figure 3

doi: https://doi.org/10.1371/journal.pone.0092281.g003