Table 2 Bivariate analysis of the dependent variables.

Age

0–6 y.

6.4 (5.3–7.6)

1

17.5 (15.7–19.3)

1

735 (602–898)

1

7–12 y.

14.5 (12.7–16.2)

2.57

2.01–3.28

< 0.001

26.4 (24.2–28.6)

1.92

1.61–2.29

< 0.001

545 (446–602)

x0.74

0.57–0.97

0.031

Sex

Female

10.3 (8.8–11.8)

1

22.3 (20.3–24.3)

1

602 (493–665)

1

Male

10.2 (8.7–11.6)

0.97

0.77–1.22

0.789

21.1 (19.1–23)

0.9

0.76–1.08

0.267

602 (493–735)

x1.06

0.81–1.39

0.673

Use of bed net

no

10.7 (9.5–11.9)

1

23.3 (21.6–24.9)

1

545 (493–665)

1

yes

8.8 (6.9–10.7)

0.77

0.58–1.03

0.074

17 (14.5–19.6)

0.62

0.49–0.78

< 0.001

735 (545–992)

x1.2

0.85–1.71

0.301

Land tenure

regular

8.9 (7.4–10.4)

1

16.8 (14.9–18.8)

1

602 (446–735)

1

irregular

11.2 (9.8–12.6)

1.29

0.95–1.77

0.142

25.2 (23.3–27.2)

2.07

1.1–3.88

0.043

602 (493–735)

x1.03

0.76–1.40

0.848

Building density

high

8.8 (7.3–10.2)

1

18.2 (16.3–20.2)

1

545 (403–665)

1

sparse

11.5 (10–12.9)

1.36

1.04–1.79

0.041

24.7 (22.7–26.6)

1.7

0.83–3.48

0.177

665 (545–812)

x1.23

0.92–1.66

0.167

Season

dry

7.7 (6.4–9.1)

1

16.6 (14.8–18.5)

1

270 (245–330)

1

rainy

12.4 (10.9–13.9)

1.72

1.35–2.2

< 0.001

26.1 (24.1–28.2)

1.94

1.59–2.37

< 0.001

898 (735–1097)

x3.28

2.48–4.34

< 0.001

Equipment

low

11 (9.6–12.4)

1

27.7 (25.6–29.7)

1

602 (545–735)

1

high

9.3 (7.8–10.8)

0.86

0.67–1.1

0.223

14.5 (12.7–16.3)

0.5

0.41–0.62

< 0.001

545 (403–665)

x0.8

0.58–1.09

0.163

Education level

low

10.9 (9.4–12.4)

1

25.6 (23.5–27.8)

1

602 (493–665)

1

high

9.6 (8.2–11)

0.85

0.67–1.08

0.191

17.9 (16.1–19.8)

0.63

0.52–0.77

< 0.001

602 (493–735)

x1.03

0.77–1.38

0.851

Travel out of Ouagadougou the preceding month

no

9.8 (8.8–10.8)

1

21.7 (20.3–23.1)

1

545 (493–665)

1

yes

16.1 (11.3–20.8)

1.83

1.24–2.69

0.004

21.7 (16.4–27.1)

1.11

0.78–1.58

0.593

1339 (735–2208)

x2.16

1.26–3.70

0.005

Distance to the closest hydrographic network

< 200 m

13 (10.8–15.3)

1

23.5 (20.7–26.4)

1

602 (18–22026)

1

200–500 m

8.5 (6.9–10.1)

0.62

0.46–0.86

0.013

21.6 (19.3–24)

1.12

0.86–1.47

0.71

493 (403–665)

x0.83

0.58–1.20

0.305

> 500 m

9.9 (8.3–11.5)

0.72

0.51–1.01

20.5 (18.3–22.7)

1.07

0.76–1.51

665 (15–29733)

x1.08

0.76–1.55

Distance to the closest drinking fountain

< 200 m

9.7 (8.1–11.3)

1

20.2 (18.1–22.4)

1

493 (403–602)

1

200–500 m

9.9 (8.4–11.4)

0.99

0.74–1.33

0.389

20 (18–22)

1.02

0.8–1.3

0.043

735 (602–898)

x1.42

1.01–1.97

0.122

> 500 m

13.1 (9.9–16.3)

1.39

0.94–2.07

32.7 (28.3–37.2)

1.64

1.09–2.47

545 (20–16318)

x1.03

0.66–1.61

Distance to the closest artificial lake

< 200 m

6.1 (0–14.2)

1

12.1 (1–23.3)

1

365 (40–3641)

1

200–500 m

10.3 (6.1–14.5)

1.63

0.32–8.33

0.81

23.5 (17.7–29.4)

1.49

0.4–5.58

0.206

493 (18–14765)

x1.4

0.19–10.31

0.742

> 500 m

10.3 (9.2–11.3)

1.48

0.31–7.2

21.7 (20.2–23.1)

0.95

0.26–3.51

602 (545–665)

x1.67

0.25–11.35