Table 6

Impact of larviciding on late stage Anopheles larvae occupancy.

Variable

Proportion occupied % (n/N)

OR [95% CI]

P

Intervention status

Non-larviciding

4.1 (44/1070)

1.00^a

NA

Larviciding area

5.9(111/1895)

2.32 [2.19,6.14]

< 0.004

Intervention status × habitat found by CORP

Found and reported by CORPs

Non-larviciding

0.9 (7/782)

1.00^a

NA

Larviciding area

0.3 (3/1181)

0.22 [0.147,0.34]

< 0.001

Not found or reported as dry habitats

Non-larviciding area

4.7 (37/782)

1.00^a

NA

Larviciding area

9.1(108/1181)

0.73 [0.383,1.37]

0.325

The Odds of change of late Anopheles habitat occupancy subject to CORPs detection sensitivity of wet habitats and subsequent larvicide application as interacting terms modelled with a binary distribution and logit link function using Generalized Estimating Equations (GEE)

^a reference group for a particular variable,

CI; confidence interval,

NA; Not applicable

n/N; the proportion of all habitats found to contain late stage Anopheles larvae by observations of the CORPs and the investigator.

OR; Odds ratios.

Chaki et al. Malaria Journal 2009 8:311   doi:10.1186/1475-2875-8-311