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Table 2 Prevalence of Schistosoma mansoni stratified by demographic characteristics of the study participants

From: Intestinal schistosomiasis and geohelminths of Ukara Island, North-Western Tanzania: prevalence, intensity of infection and associated risk factors among school children

Variable

No examined

Prevalence (%)

95% CI

χ2

P–value

Sex

Female

421

277 (65.80)

46.79 – 92.51

1.43

0.23

Male

352

217 (61.65)

41.90 – 90.69

Age (in years)

4 – 7

234

165 (70.51)

57.68 – 86.19

9.2117

<0.010

8 – 10

370

234 (63.41)

40.94 – 98.22

11 – 15

120

95 (55.88)

39.91 – 78.22

Schools

Chifule

190

145 (76.32)

69.70 – 83.56

  

Mubule

155

98 (63.23)

56.97 – 70.17

  

Kome

149

144 (96.64)

93.72 – 99.57

190.18

<0.001

Nyamanga

155

81 (52.26)

44.70 – 61.09

  

Kumambe

124

26 (20.97)

12.59 – 34.91

  

Parents occupation

Peasants

561

327 (58.29)

52.65 – 64.53

27.9905

<0.001

Fishing

212

167 (78.77)

76.96 – 80.63

Presence of toilet at home/school

Yes

675

427 (63.26)

56.91 – 70.32

0.97

0.33

No

98

67 (68.37)

65.15 – 71.73

Lake visit

Always

653

442 (67.69)

64.04 – 70.62

26.07

<0.001

Sometimes

120

52 (43.33)

26.59 – 70.62

Paddy cultivation

Always

128

80 (62.5)

53.99 – 71.00

0.13

0.717

Sometimes

645

414 (64.19)

60.47 – 67.89