TABLE 2.

Statistical analyses of the effects of saline and drug treatments on urine output, expressed as an absolute change (g) from control

The control was the mean urine output from three sessions preceding each treatment.

Treatment	Dose (mg/kg)	Urine (Δ Control, g)	S.E.M.	Post Hoc Test (Drug versus Saline)
Saline	n/a	−0.251	0.115	n/a
CP55940	0.32	1.185	0.348	t = 1.02, n.s.
Spiradoline	3.2	6.127	0.211	t = 4.54, ***P < 0.0001
3:1 Spiradoline:CP55940	3.3 Spiradoline + 0.13 CP55940	7.658	1.370	t = 5.63, ***P < 0.0001
1:1 Spiradoline:CP55940	1.1 Spiradoline + 0.13 CP55940	4.362	1.512	t = 3.29, *P < 0.05
1:3 Spiradoline:CP55940	1.1 Spiradoline + 0.39 CP55940	6.813	0.994	t = 5.03, ***P < 0.001

n.s., Not significant.