Table 1 General characteristics of the 254 aboriginal schoolchildren participating in the study

Age groups:

≥ 10 years

48.0

< 10 years

52.0

Gender:

Males

48.8

Females

51.2

Socioeconomic status:

Fathers' education level (at least 6 years)

51.2

Mothers' education level (at least 6 years)

46.5

Low household income (< RM500)

63.0

Working fathers

89.6

Working mothers

5.2

Large family size (> 7 members)

22.4

Piped water supply

19.3

Presence of toilet (pit or flush) in the house

48.4