Characteristics

Number

%

Age

256

Mean ± SD = 35.7 ± 4.2 years

(Min. - Max. = 27 - 60 years)

Sex

Male

201

78.5

Female

55

21.5

Education

Completed Primary School

28

10.9

Completed Secondary school

115

44.9

Tertiary education

113

45.2

Years in operation range

≤5

143

55.9

6 - 10

83

32.3

11 - 15

26

10.2

≥16

4

1.6