Table 4 Knowledge about intestinal helminths, symptoms, transmission and prevention among teachers in both schools involved in the study

HELP n (%)

Control n (%)

OR (95% CI)

P

HELP n (%)

Control n (%)

OR (95% CI)

P

Heard about intestinal worms

25 (86.2)

13 (86.7)

0.9 (0.2, 5.9)

0.966*

29 (100)

14 (93.3)

0.341*

Source of information

Clinic/hospitals

4 (16.0)

2 (15.4)

0.9 (0.2, 6.0)

0.961*

5 (17.2)

3 (21.4)

0.8 (0.3, 2.3)

0.741*

Internet

3 (12.0)

2 (15.4)

0.8 (0.3, 2.7)

0.770*

3 (10.3)

3 (21.4)

0.6 (0.2, 1.5)

0.373*

Mass media

4 (16.0)

2 (15.4)

1.2 (0.4, 4.3)

0.961*

3 (10.3)

2 (14.3)

0.8 (0.3, 2.5)

0.706*

School

0

0

NA

-

23 (79.3)

4 (28.6)

2.6 (1.0, 7.1)

< 0.001

Type of worms

Roundworm

8 (32.0)

5 (38.5)

0.8 (0.3, 2.0)

0.690

27 (93.1)

5 (35.7)

5.2 (2.2, 12.2)

< 0.001

Pinworm

6 (24.0)

4 (30.8)

0.8 (0.3, 2.1)

0.709*

9 (31.0)

7 (50.0)

0.6 (0.3, 1.4)

0.228

Hookworm

9 (36.0)

6 (46.2)

0.7 (0.3, 1.8)

0.544

23 (79.3)

6 (42.9)

2.7 (1.2, 6.4)

0.035*

Whipworm

0

0

NA

-

11 (37.9)

0 (0.0)

NA

0.008*

Signs and symptoms

Know at least one symptom

20 (80.0)

9 (69.2)

1.4 (0.6, 3.5)

0.459

28 (96.6)

9 (64.3)

3.4 (1.8, 6.7)

0.010*

Abdominal pain

14 (56.0)

7 (53.8)

1.1 (0.4, 2.5)

0.899

29 (100)

7 (50.0)

NA

< 0.001

Diarrhoea

10 (40.0)

7 (53.8)

0.7 (0.3, 1.7)

0.415

18 (62.1)

8 (57.1)

1.1 (0.5, 2.7)

0.757

Vomiting

6 (24.0)

3 (23.1)

1.0 (0.4, 2.9)

0.949*

6 (20.7)

4 (28.6)

0.8 (0.3, 1.9)

0.704

Loss of appetite

6 (24.0)

5 (38.5)

0.7 (0.3, 1.6)

0.457

6 (20.7)

4 (28.6)

0.8 (0.3, 1.9)

0.704*

Body weakness

7 (28.0)

2 (15.4)

1.7 (0.5, 6.3)

0.456*

7 (24.1)

4 (28.6)

0.9 (0.4, 2.2)

0.755

Blood in stool

4 (16.0)

2 (15.4)

1.0 (0.3, 3.5)

0.961*

1 (3.4)

1 (7.1)

0.6 (0.2, 2.7)

0.590*

Poor school performance

0

0

NA

-

12 (41.4)

1 (7.1)

5.6 (1.0, 38.7)

0.033*

Transmission

Know at least one way of transmission

16 (64.0)

10 (76.9)

0.7 (0.2, 1.9)

0.486

29 (100)

11 (78.6)

NA

0.029*

Eating contaminated food

10 (40.0)

5 (38.5)

1.0 (0.4, 2.6)

0.927

17 (58.6)

8 (57.1)

1.0 (0.4, 2.5)

0.927

Dirty hands

13 (52.0)

8 (61.5)

0.8 (0.3, 1.9)

0.575

20 (69.0)

9 (64.3)

1.2 (0.5, 2.8)

0.795

Walking barefooted

7 (28.0)

4 (30.8)

0.9 (0.4, 2.4)

0.859

17 (58.6)

5 (35.7)

1.9 (0.8, 4.7)

0.159

Drinking untreated water

8 (32.0)

4 (30.8)

1.0 (0.4, 2.7)

0.938

5 (17.2)

5 (35.7)

0.5 (0.2, 1.3)

0.252

Playing with soil

2 (8.0)

1 (7.7)

1.0 (0.2, 4.5)

0.973*

20 (69.0)

4 (28.6)

3.1 (1.2, 8.5)

0.012

Not cutting nails regularly

5 (20.0)

4 (30.8)

0.7 (0.3, 1.7)

0.689*

10 (34.5)

6 (42.9)

0.8 (0.3, 1.8)

0.594

Flies

0

0

NA

-

11 (37.9)

1 (7.1)

5.0 (1.0, 34.3)

0.035*

Prevention

Know at least one way for prevention

20 (80.0)

8 (61.5)

1.7 (0.7,4.1)

0.263*

29 (100)

10 (71.4)

NA

0.008*

Taking de-worming drugs

11 (44.0)

8 (61.5)

0.6 (0.2, 1.6)

0.305

17 (58.6)

7 (50.0)

1.3 (0.5, 2.9)

0.594

Washing hands before eating

8 (32.0)

5 (38.5)

0.8 (0.3, 2.0)

0.730*

29 (100)

9 (64.3)

NA

0.002*

Wearing shoes when outside

7 (28.0)

4 (30.8)

0.9 (0.4, 2.4)

0.858*

15 (51.7)

6 (42.9)

1.3 (0.5, 3.0)

0.586

Boiling drinking water

3 (12.0)

4 (30.8)

0.5 (0.2, 1.2)

0.203*

6 (20.7)

4 (28.6)

0.8 (0.3, 1.9)

0.704*

Washing vegetables before consumption

5 (20.0)

6 (46.2)

0.4 (0.2, 1.1)

0.135*

9 (31.0)

5 (35.7)

0.9 (0.4, 2.1)

0.759*