Table 1.

Past medical history features of the study population.

Feature	Subgroup	n	%
Sex	Male	59	44.4
	Female	74	55.6
History	Congestive heart failure	13	90.2
	Chronic obstructive pulmonary disease	28	78.9
	Diabetes mellitus	26	19.5
	Hypertension	37	27.8
	Cancer	1	0.8
	Chronic renal failure	14	10.5
	Cerebrovascular accident with sequel	8	6.0
Admitted for	Congestive heart failure	66	49.6
	Chronic obstructive pulmonary disease	43	32.3
	Pneumonia	20	15.0
	Cancer	3	2.3
	Chronic renal failure	1	0.8