Table 3

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

Malaria transmission level

Location

Stillbirth*

Low birthweight**

All

PG

MG

All

PG

MG

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

*twins excluded** twins and stillbirth excluded, risk period for low birthweight is calculated to start 3 months after the peak malaria period and to last for 5 months.

Wort et al. Malaria Journal 2006 5:89   doi:10.1186/1475-2875-5-89