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Table 2 Association between S. haematobium egg counts and microhaematuria

From: Urogenital schistosomiasis elimination in Zanzibar: accuracy of urine filtration and haematuria reagent strips for diagnosing light intensity Schistosoma haematobium infections

Variable type

Variable name

n

OR

95% CI

Children aged 9–12 years

39,207

  

Outcome

S. haematobium egg-positive

   

Explanatory

Microhaematuria-positive

 

86.6

75.6–99.1

 Trace

 

42.8

35.0–52.3

 +

 

66.8

53.4–83.2

 ++

 

129.6

104.2–161.2

 +++

 

188.8

146.5–243.3

Boys

 

1.9

1.67–2.17

Outcome

Microhaematuria-positive

   

Explanatory

S. haematobium egg-positive

 

85.7

74.9–98.1

 1-5 eggs

 

45

37.6–53.9

 6-10 eggs

 

96.1

72.8–126.9

 11-49 eggs

 

208.7

166.0–262.5

 50+ eggs

 

604.2

414.5–880.8

Boys

 

0.83

0.74–0.93

Adults aged 20–55 years

18,155

  

Outcome

S. haematobium egg-positive

   

Explanatory

Microhaematuria-positive

 

29.6

23.6–37.2

 Trace

 

19.3

13.7–27.1

 +

 

21.6

15.3–27.1

 ++

 

34.6

25.3–47.3

 +++

 

50.2

36.4–69.3

Men

 

2.5

2.0–3.1

Outcome

Microhaematuria-positive

   

Explanatory

S. haematobium egg-positive

 

29.5

23.6–36.8

 1–5 eggs

 

19.9

15.0–26.3

 6–10 eggs

 

42.3

24.2–74.0

 11–49 eggs

 

50.6

32.0–79.9

 50+ eggs

 

129.1

60.6–274.8

Men

 

0.5

0.44–0.55

  1. Abbreviations: OR odds ratio; 95% CI 95% confidence interval