VHVs’ dengue knowledge before and after developing the surveillance system
| Number (percentage) of correct answers n(%) | χ2 | |||||||
|---|---|---|---|---|---|---|---|---|
| Low dengue risk PCU | High dengue risk PCU | Compare low and high dengue risk PCUs | ||||||
| VHVs’ dengue knowledge | Before (n=79) | After (n=69) | χ2 | Before (n=49) | After (n=47) | χ2 | Before of low and high (n=79, 49) | After of low and high (n=69, 47) |
| 1. Aedes aegypti is a conductor of dengue fever | 78 (98.7) | 69 (100) | 0.879 | 48 (98) | 47 (100) | 0.969 | 0.118 | – |
| 2. All populations in the community are at high risk of dengue fever | 77 (97.5) | 69 (100) | 1.771 | 49 (100) | 47 (100) | – | 1.260 | – |
| 3. Aedes aegypti can fly between houses 50–100 meters away | 78 (98.7) | 69 (100) | 0.879 | 49 (100) | 47 (100) | – | 0.625 | – |
| 4. A very high and sustained fever of 2–7 days is usually a sign of dengue fever | 76 (96.2) | 69 (100) | 2.674 | 43 (89.6) | 47 (100) | 5.168 | 2.118 | – |
| 5. Dengue fever usually results in a red face and skin bleeding (arm and leg) after a fever for 2–3 days | 76 (96.2) | 69 (100) | 2.674 | 46 (93.9) | 47 (100) | 2.970 | 0.366 | – |
| 6. Dengue treatment must follow only the signs and symptoms because no specific drug exists | 73 (92.4) | 69 (100) | 5.462* | 48 (98.0) | 47 (100) | 0.969 | 1.805 | – |
| 7. Patients with dengue fever can die | 78 (98.7) | 69 (100) | 0.879 | 48 (98.0) | 47 (100) | 0.969 | 0.118 | – |
| 8. Aedes aegypti habitually bite during the daytime | 78 (98.7) | 69 (100) | 0.879 | 49 (100) | 47 (100) | – | 0.625 | – |
| 9. Aedes aegypti breed in water containers that are clean, such as those in the bathroom and water jars | 77 (97.5) | 69 (100) | 1.771 | 49 (100) | 47 (100) | – | 1.260 | – |
| 10. Coconut shells, broken water jars, and garbage with stagnant water surrounding the household are Aedes aegypti breeding sources | 78 (98.7) | 69 (100) | 0.879 | 48 (98.0) | 47 (100) | 0.969 | 0.118 | – |
| 11. Closed water jars and water containers are a way to prevent mosquito breeding | 78 (98.7) | 69 (100) | 0.879 | 49 (100) | 47 (100) | – | 0.625 | – |
| 12. Eliminate mosquito breeding sources with using clean containers and change the water every seven days | 79 (100) | 69 (100) | – | 49 (100) | 47 (100) | – | – | – |
| 13. Dry red lime can be placed in a water container to decrease mosquito breeding | 76 (97.4) | 69 (100) | 1.794 | 45 (91.8) | 46 (97.9) | 1.770 | 2.096 | 1.481 |
| 14. Sleep with a net to prevent mosquito bites | 79 (100) | 69 (100) | – | 49 (100) | 47 (100) | – | – | – |
| 15. Citronella is an herb for repelling mosquitoes | 79 (100) | 69 (100) | – | 48 (98.0) | 47 (100) | 0.969 | 1.625 | – |
| Number (percentage) of correct answers | ||||||||
|---|---|---|---|---|---|---|---|---|
| Low dengue risk PCU | High dengue risk PCU | Compare low and high dengue risk PCUs | ||||||
| VHVs’ dengue knowledge | Before ( | After ( | Before ( | After ( | Before of low and high ( | After of low and high ( | ||
| 1. | 78 (98.7) | 69 (100) | 0.879 | 48 (98) | 47 (100) | 0.969 | 0.118 | – |
| 2. All populations in the community are at high risk of dengue fever | 77 (97.5) | 69 (100) | 1.771 | 49 (100) | 47 (100) | – | 1.260 | – |
| 3. | 78 (98.7) | 69 (100) | 0.879 | 49 (100) | 47 (100) | – | 0.625 | – |
| 4. A very high and sustained fever of 2–7 days is usually a sign of dengue fever | 76 (96.2) | 69 (100) | 2.674 | 43 (89.6) | 47 (100) | 5.168 | 2.118 | – |
| 5. Dengue fever usually results in a red face and skin bleeding (arm and leg) after a fever for 2–3 days | 76 (96.2) | 69 (100) | 2.674 | 46 (93.9) | 47 (100) | 2.970 | 0.366 | – |
| 6. Dengue treatment must follow only the signs and symptoms because no specific drug exists | 73 (92.4) | 69 (100) | 5.462* | 48 (98.0) | 47 (100) | 0.969 | 1.805 | – |
| 7. Patients with dengue fever can die | 78 (98.7) | 69 (100) | 0.879 | 48 (98.0) | 47 (100) | 0.969 | 0.118 | – |
| 8. | 78 (98.7) | 69 (100) | 0.879 | 49 (100) | 47 (100) | – | 0.625 | – |
| 9. | 77 (97.5) | 69 (100) | 1.771 | 49 (100) | 47 (100) | – | 1.260 | – |
| 10. Coconut shells, broken water jars, and garbage with stagnant water surrounding the household are | 78 (98.7) | 69 (100) | 0.879 | 48 (98.0) | 47 (100) | 0.969 | 0.118 | – |
| 11. Closed water jars and water containers are a way to prevent mosquito breeding | 78 (98.7) | 69 (100) | 0.879 | 49 (100) | 47 (100) | – | 0.625 | – |
| 12. Eliminate mosquito breeding sources with using clean containers and change the water every seven days | 79 (100) | 69 (100) | – | 49 (100) | 47 (100) | – | – | – |
| 13. Dry red lime can be placed in a water container to decrease mosquito breeding | 76 (97.4) | 69 (100) | 1.794 | 45 (91.8) | 46 (97.9) | 1.770 | 2.096 | 1.481 |
| 14. Sleep with a net to prevent mosquito bites | 79 (100) | 69 (100) | – | 49 (100) | 47 (100) | – | – | – |
| 15. Citronella is an herb for repelling mosquitoes | 79 (100) | 69 (100) | – | 48 (98.0) | 47 (100) | 0.969 | 1.625 | – |
Notes: Chi-square test (x2) and Fisher’s Exact tests. *p<0.05
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