Table 4 Associations of knowledge of Orang Asli participants about intestinal helminths with educational level and employment status

Educated

Non educated

OR

95% CI

Working

Not working

OR

95% CI

–Heard about worms

87(66.9)

45(52.9)

1.8

1.0, 3.2*†

30(71.4)

102(59)

1.7

0.8, 3.6

Signs and symptoms:

–At least one symptom

51(39.2)

12(14.1)

3.9

1.9, 7.9*†

17(40.5)

46(26.6)

1.9

0.9, 3.8

–Abdominal pain

18(13.8)

3(3.5)

3.4

1.2, 5.4*

7(16.7)

14(8.1)

1.3

0.9, 4.6

–Abdominal distension

16(12.3)

5(5.9)

2.2

0.8, 6.4

8 (19.0)

13(7.5)

2.8

1.1, 7.2*

–Vomiting

12(9.2)

3(3.5)

2.8

0.8, 6.2

4 (9.5)

11(6.4)

1.6

0.5, 3.5

–Diarrhoea

17(13.1)

2(2.4)

4.5

1.4, 7.7*†

7(16.7)

12(6.7)

2.6

1.0, 7.3*

–Lack of appetite

14(10.8)

2(2.4)

4.0

1.1, 6.2*†

5(11.9)

11(6.4)

1.9

0.7, 6.1

–Pale face

9(6.9)

3(3.5)

2.0

0.5, 7.7

3(7.1)

9(5.2)

1.4

0.4, 4.5

Transmission:

–At least one way of transmission

44(33.8)

17(20.2)

2.0

1.1, 3.8*

21(50.0)

41(23.7)

3.2

1.6, 6.5*†

–Playing with soil

9(6.9)

3(3.5)

2.0

0.5, 7.7

4(9.5)

8(4.6)

2.2

0.6, 5.8

–Stagnant water

11(8.5)

3(3.5)

2.5

0.7, 9.3

9(21.4)

5(2.9)

6.1

2.9, 11.7*†

–Dirty hands

11(8.5)

4(4.7)

1.9

0.6, 6.1

2(4.8)

13(7.5)

0.6

0.1, 2.8

–Walking barefooted

12(9.2)

3(3.5)

2.8

0.8, 7.8

4(9.5)

11(6.4)

1.5

0.5, 5.1

–Eating contaminated food

11(8.5)

6(7.1)

1.2

0.4, 3.4

8(19.0)

9(5.2)

4.2

1.5, 9.8*†

Prevention:

–At least one preventive measure

29(22.3)

6(7.1)

3.8

1.4, 9.5*†

9(21.4)

26(15.0)

1.5

0.7, 3.5

–Washing hands before eating

13(10)

3(3.5)

3.0

0.8, 9.1

5(11.9)

11(6.4)

1.9

0.7, 6.1

–Wearing shoes when outside the house

11(8.5)

2(2.4)

3.8

0.8. 8.6

4 (9.5)

9(5.2)

1.9

0.6, 5.6

–Taking de-worming drugs

15(11.5)

3(3.5)

3.5

1.1, 9.2*†

5(11.9)

13(7.5)

1.7

0.6, 4.9