Table II -.

Average changes in P&S measures, sympathetic (S, in bpm²), parasympathetic (P, in bpm²) and sympathovagal balance (SB, unitless) responses, for each subgroup and agent

Change	ΔS (bpm2)	ΔP (bpm2)	ΔSB (unitless)
Significance of changes are marked (*p<0.010 or **p<0.001). See Table I for more details. See text for discussion.
From Table II, the results of the P&S M.
(+)Carvedilol	−3.67**	0.99**	−0.40*
(+)Metoprolol	−0.04	0.29**	−0.20*
(−)Carvedilol	2.07**	−0.76**	0.77*
(−)Metoprolol	0.28*	−0.47**	−1.15*
(o)Carvedilol	0.05	0.00	−0.28
(o)Metoprolol	−0.04	0.09	0.15