Table 1: Demographic characteristics of the study subjects.

Frequency Percent
Age group Mean ± SD = 61.60 ± 10.77
25 - 34 6 2.4
35 - 44 7 2.8
45 - 54 42 16.9
55 - 64 87 34.9
65 - 74 78 31.3
≥75 29 11.6
Sex
Male 77 30.9
Female 172 69.1
Occupation
Civil servant 36 14.5
Artisan 23 9.2
Business/Trader 50 20.1
Farmer 3 1.2
Housewife 9 3.6
Teacher 6 2.4
Unemployed 28 11.2
Retired 94 37.8
Level of education
No formal 25 10.0
Primary 61 24.5
Secondary 68 27.3
Tertiary 95 38.2