Table 5

Output from a logistic regression model with (a) presence versus absence of Culicine and (b) high versus low density of Culicine larvae as outcome, and ecological parameters as explanatory variable. The same variables as in tables 2 and 3 were included in the model, but only significant results are shown.

5a

Variable

Odds Ratio

95% Confidence Interval for OR

P-Value

Lower

Upper

General Surrounding

High density housing

1

Other

.646

.170

2.453

.520

Industry

.177

.041

.771

.021*

Fields

.692

.302

1.585

.384

Turbidity of water

Clear

1

Turbid

3.620

1.872

7.000

.000**

Very turbid

2.689

.981

7.369

.054

pH of water (Quartiles)

8.1–10.1

1

7.7–8.0

1.986

.845

4.669

.116

7.4–7.6

2.916

1.252

6.792

.013*

6.1–7.3

2.586

1.109

6.030

.028*

5b

Variable

Odds Ratio

95% Confidence Interval for OR

P-Value

Lower

Upper

Type of breeding site

Other

1

Large drain

4.207

.575

30.801

.157

Small drain

.836

.054

12.894

.898

Swamp

1.811

.507

6.467

.361

Puddle

2.797

.345

22.650

.335

Artificial hole

1.137

.288

4.486

.855

Concrete hole

.059

.005

.733

.028*

pH of water (Quartiles)

8.0–9.0

1

7.6–7.9

2.291

.748

7.014

.146

7.4–7.5

2.485

.707

8.740

.156

6.4–7.3

4.024

1.230

13.158

.021*

Sattler et al. Malaria Journal 2005 4:4   doi:10.1186/1475-2875-4-4