Table 2.

Changes in cardiovascular autonomic reflex tests during the study in patients who received quinapril (group A) and in those who did not (group B).

	Group A (n = 31)			Group B (n = 32)			p  (group A versus group B at end of treatment)
	Baseline	End of treatment	p  (versus baseline)	Baseline	End of treatment	p  (versus baseline)
E/I index	1.11 ± 0.06	1.23 ± 0.12	0.011	1.09 ± 0.06	1.04 ± 0.04	0.007	<0.001
MCR	18.1 ± 6.2	38.7 ± 20.5	0.006	14.2 ± 4.2	8.1 ± 4.5	0.01	<0.001
SD	31.1 ± 11.9	56.6 ± 23.0	0.004	28.2 ± 9.9	15.5 ± 7.4	<0.05	<0.001
Valsalva index	1.48 ± 0.28	1.56 ± 0.33	NS	1.52 ± 0.22	1.50 ± 0.28	NS	NS
30 : 15 index	1.15 ± 0.12	1.18 ± 0.12	NS	1.15 ± 0.06	1.08 ± 0.04	<0.05	<0.001
OH	16.0 ± 11.8	10.4 ± 6.1	NS	18.5 ± 4.5	28.0 ± 6.3	0.018	<0.001

E/I: expiration/inspiration; MCR: mean circular resultant; SD: standard deviation; OH: orthostatic hypotension.