Table 2.

Time to event (min; mean ± SE) under various euthanasia regimens

			Pairwise comparison P valuea
Event	Time to event	Euthanizing agent	Xylazine + acepromazine	Xylazine only	Xylazine + KCl	MS222	Pentobarbital
Cardiac arrest
	0.14 ± 0.10	Xylazine + acepromazine	—	<0.0001	0.2139	0.0005	<0.0001
	0.34 ± 0.10	Xylazine only	—	—	0.0032	0.0005	<0.0001
	0.20 ± 0.12	Xylazine + KCl	—	—	—	0.0004	<0.0001
	0.65 ± 0.47	MS222	—	—	—	—	0.0003
	1.04 ± 0.58	Pentobarbital	—	—	—	—	—
Purposeful movement
	4.63 ± 0.61	Xylazine + acepromazine	—	0.0422	0.1364	<0.0001	<0.0001
	>5.00	Xylazine only	—	—	0.0037	<0.0001	<0.0001
	4.08 ± 1.05	Xylazine + KCl	—	—	—	<0.0001	<0.0001
	1.16 ± 1.12	MS222	—	—	—	—	0.7519
	1.03 ± 0.58	Pentobarbital	—	—	—	—	—

^aχ² test subsequent to generalized estimating equations analyses