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Table 3 Baseline Indoor Resting Density (IRD), Sporozoite Rate (SR) and infective bites as observed during the pre-intervention survey in Control (C) and Intervention (I) areas.

From: Spatial targeted vector control in the highlands of Burundi and its impact on malaria transmission

 

Valleys

Hill tops

 

C

I

Ratio* (95% CI)

P value

C

I

Ratio* (95% CI)

P value

IRD total Anopheles/house

1.3

7.6

5.9 (1.7–21.0)

0.007

1.3

0.6

0.4 (0.1–1.6)

0.200

SR total Anopheles (No. tested)

3.8% (104)

4.2% (737)

1.1 (0.4–3.1)

0.858

0.9% (114)

6.3% (64)

7.5 (2.2–26.2)

0.002

IRD fed Anopheles/house

0.5

4.3

8.7 (2.3–32.9)

0.002

0.4

0.2

0.6 (0.2–1.8)

0.333

SR fed Anopheles (No. tested)

2.0% (49)

4.1% (419)

2.0 (0.4–11.0)

0.397

2.8% (36)

9.4% (32)

3.6 (0.6–22.3)

0.156

Infective bites/house/month

0.3

5.1

17.0 (1.7–171)

0.015

0.3

0.6

2.0 (0.2–23.3)

0.580

  1. *Density ratios for indoor resting density and infective bites. Odd ratios for sporozoite rates