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 
PValue 

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 
PValue 

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:10.1186/1475287544 