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Table 1 Scoring of knowledge items

From: Risk factors of dengue fever in an urban area in Vietnam: a case-control study

Questions

Items

Score

a)

List the typical symptoms of dengue fever

 

1. Don’t know

0

2. Joint and muscle pain

1

3. Headaches, pain behind the eyes

1

4. High fever continuously within 2–7 days (higher 39 degrees)

1

5. Epistaxis

1

6. Heamorrhagic under skin

1

7. Stomachache, vomiting

1

8. Bleeding gum

1

Min - Max

0–7

b)

9. How does dengue virus transmits to people?

 

• Don’t know

0

• Mosquito bites

1

Min - Max

0–1

c)

10. Which type of mosquito is spreading dengue fever

 

• Don’t know

0

• Stripe Mosquito (Aedes aegypti)/Tiger Mosquito (Aedes albopictus)

1

Culex Mosquito

0

Min - Max

0–1

d)

11. The biting behavior of dengue mosquitoes

 

• Don’t know

0

• Daylight

0

• Night

0

• Early in the morning and in the evening before dusk.

1

Min - Max

0–1

e)

12. The breeding season of dengue mosquitoes

 

• Don’t know

0

• Mainly in the rainy season

1

• Mainly in the dry season

0

• Both of seasons

0

Min - Max

0–1

f)

List the breeding sites of dengue mosquitoes

 

13. Don’t know

0

14. Water-filled jars, tanks

1

15. Water-filled vases

1

16. Water- filled used tires

1

17. Garbage containing water

1

Min - Max

0–4

g)

18. Can dengue fever be prevented?

 

• Yes

1

• No

0

• Don’t know

0

Min - Max

0–1

h)

List the methods to prevent dengue fever

 

19. Don’t know

0

20. Eliminate mosquito

1

21. Eliminate the larvae

1

22. Avoid mosquito bites

1

Min - Max

0–3