Table 2.

demographic data (age, sex, occupation) (n=190)

Variable	n	%
Age, years
0-14	23	12.1
15-44	104	54.7
45-64	37	19.5
More than 64	26	13.7
Age, years, mean (SD)	39.2 (22.1)
Sex, male	147	77.4
Occupation
Farmer	38	20.0
Business	31	16.3
Student	31	16.3
Field worker	26	13.7
Driver	15	7.9
Tradesman	12	6.3
Unemployed	10	5.3
Other	27	14.2