Variable (years)

No. examined

No. (%) positive

Age:

3-20

21-40

41-60

105

80

15

8 (7.6)

9 (11.25)

1 (6.66)

Sex:

Male

Female

100

100

9 (50)

9 (50)

Residency:

Urban

Rural

120

80

11 (9.16)

7 (8.75)

Total

200

18 (9.0)