[Retracted] Comparison of the Ameliorating Effects of Valsartan and Amlodipine on Vascular Endothelial Dysfunction and Oxidative Stress in Elderly Patients with Type H Hypertension

Table 2

Comparison of clinical efficacy between the two groups of patients (n, %).

Group	Number of cases	Markedly effective	Effective	Invalid	In total
Valsartan group	40	17 (42.50)	15 (37.5)	8 (20.0)	32 (80.0)
Amlodipine group	42	22 (52.38)	14 (33.33)	6 (14.29)	36 (85.71)
Z/χ^2	–	0.913	0.492
value	–	0.634	0.473