Table 2.

Results of the multiple comparisons of extrasystole density of the groups of treatment

Group	Comparison	Mean difference	Standard error	t value	gl	p
Crossing	Placebo pre vs post	-22.46	37.74	-0.59	20	> 0.999
	MgP pre vs post	224.55	37.74	5.95	20	< 0.001
	Placebo vs MgP pre	-0.01	37.74	0.00	20	> 0.999
	Placebo vs MgP post	246.99	37.74	6.54	20	< 0.001
	(pre-post) Placebo vs MgP	247.00	53.38	4.63	60	< 0.001
Relapse	Pre vs Post	138.25	24.11	5.73	16	< 0.001
	(pre-post) 1st Treat vs 2nd Treat	-66.86	46.72	-1.43	48	0.159

vs: versus; result of Bonferroni multiple comparisons.