Table 3 Univariate risk factor analysis for soil transmitted helminths and S. mansoni infections among school children in Zarima town, northwest Ethiopia, 2009

Demographics variables

   sex

Male

157(49.2)

137(87.3)

0.913(0.827,1007)

0.067

Female

162(50.8)

126(77.7)

   Age categories

5-9

47(14.7)

43(91.5)

3.08(1.017,9.373)

0.047

10-14

151(47.3)

129 (85.4)

1.68(0.904,3.134)

0.101

15-19

121(38)

91(75.2)

1

0.071

   Education level

First cycle(1-4)

160(50.2)

139(86.9)

0.650(0.329,1.093)

0.093

Second cycle(5-8)

159(49.8)

124(77.9)

   Mother's education

Illiterate

226(70.8)

191(84.5)

0.764(0.407,1.431)

0.399

Literate

93(29.2)

72(77.4)

Risk factors

   Water source

Pipe line

117(36.7)

87(74.4)

1

0.005

Protected spring

153(48)

134(87.6)

0.483(0.196,1.190)

0.114

Well

49(15.3)

42(85.7)

1.427(0.556,3.701)

0.465

Hand washing with soap

   Daily

30(9.4)

10(33.3)

1

< 0.001

   At least once a week

135(42.3)

112 (83)

0.311(0.011,0.086)

< 0.001

   Less frequent than once a week

154(48.3)

141 (91.5)

0.292(0.130,0.652)

0.003

   Latrine type

Private toilet

132(41.4)

112(84.8)

1

0.829

Public toilet

30(9.4)

25 (83.3)

0.878(0.325,2.616)

0.878

Open field

157(49.2)

126 (80.2)

1.12(0.384,3.27)

0.836