Disease Aspect Overall
% (95%CI)n
Farming area
%(95%CI)n
Rural area
%(95%CI)n
Χ2–test
p-vavue
  Schistosomiasis Correct knowledge about preventive*
measures before intervention (2004)
22.1 (16.1-29.0) 172 26.4 (17.6-37.0) 87 17.6 (10.2-27.4) 85 0.165
Correct knowledge about preventive
measures after intervention (2006)
69.2 (61.7-76.0) 172 54.0 (43.0-64.8) 87 84.5 (75.3-91.6) 85 <0.001
  Malaria Correct knowledge about preventive*
measures before intervention (2004)
19.2 (13.6-25.9) 172 25.3 (16.6-35.7) 87 12.9 (6.6-22.0) 85 0.040
Correct knowledge about preventive
measures after intervention (2006)
66.3 (58.7-73.3) 172 64.4 (53.4-74.4) 87 68.2 (57.2-77.9) 85 0.630
  STH Correct knowledge about preventive*
measures before intervention (2004)
5.8 (2.8-10.4) 172 8.0 (3.3-15.9) 87 3.5 (0.7-10.0) 85 0.206
Correct knowledge about preventive
measures after intervention (2006)
59.3 (51.6-66.7) 172 50.6 (39.6-61.5) 87 68.2 (57.2-77.9) 85 0.022
Table 4: Schoolchildren’s knowledge about prevention measures for schistosomiasis, STHs and malaria before and after intervention