Table 3 Comparison of Ndolage and Kilosa delivery data between, 1997–1999

Between malaria seasons

Ndolage

2.4

1.2

3.2

9.8

14.4

7.1

Kilosa

5.6

4.6

6.3

15.4

23.0

10.0

Odds ratio

2.4 (1.7–3.5)

2.9 (1.8–8.5)

2.1 (1.3–3.1)

1.68 (1.36–2.07)

1.8 (1.3–2.4)

1.5 (1.1–2.0)

p-value

<0.001

<0.001

<0.001

<0.001

<0.001

0.021

Malaria seasons

Ndolage

1.9

2.5

1.4

11.7

13.9

9.8

Kilosa

5.9

5.1

6.5

16.5

25.2

10.2

Odds ratio

3.2 (1.7–5.9)

2.1 (0.9–5.3)

4.98 (2.08–11.92)

1.5 (1.2–1.9)

2.1 (1.4–3.0)

1.1 (0.8–1.6)

p-value

<0.001

>0.05

<0.001

0.001

<0.001

>0.05

ENSO

Ndolage

4.1

3.5

4.5

12.4

22.2

7.4

Kilosa

4.9

3.3

5.9

14.6

19.8

11.1

Odds ratio

1.2 (0.8–1.8)

0.9 (0.4–2.1)

1.3 (0.8–2.2)

1.2 (0.8–1.8)

0.9 (0.5–1.5)

1.6 (0.9–2.8)

p-value

>0.05

>0.05

>0.05

>0.05

>0.05

>0.05