Table 1.

Demographic characteristics of the two study groups.

	Group A	Group B
Mean age	75.6	76.7
Male	81.7%	78.6%
Coronary artery disease	63%	64.4%
COPD	35.9%	38.7%
Renal failure	57.8%	58.4%
Hypertension	88.5%	91.8%
Dyslipidemia	75.5%	78.6%