Table 1.  Sociodemographic characteristics of the elderly people.

	Control	Experimental	P value
Median age (range)	72 ± 6.30	79 ± 5.23	n.s.
Gender
Female: Male	14 (48.3): 15 (51.7)	17 (56.7): 13 (43.3)	P = 0.701
Education
Illiterate	2 (6.9)	0 (0)
Literate	6 (20.7)	7 (23.3)
Middle school	12 (41.4)	13 (43.3)	P = 0.541
High school	9 (31)	10 (33.3)
Chronic disease
Yes: No	25 (86.2): 4 (13.8)	28 (93.3): 2 (6.7)	P = 0.424

n.s., not significant.