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Table 1 Negative binomial regression model comparing mosquitoes counts in villages treated with three different Bti-interventions during non-intervention (2013 baseline) and intervention (2014) periods for female Anopheles captured indoors and outdoors, analysed together and separately. The random effect was integrated at village level

From: Reduction of malaria vector mosquitoes in a large-scale intervention trial in rural Burkina Faso using Bti based larval source management

Bti interventions

N

Incidence-rate ratio (95% CI)

p

% reduction (95% CI)

All (N = 4031)

 Untreated control

2973

  

 Guided treatment

409

0.393 (0.340–0.455)

< 0.001

60.7% (54.5%–66.0%)

 Full treatment

649

0.304 (0.258–0.359)

< 0.001

69.6% (64.1%–74.2%)

Indoors (N = 2063)

 Untreated control

1522

  

 Guided treatment

208

0.384 (0.324–0.455)

< 0.001

61.6% (54.5%–67.6%)

 Full treatment

333

0.318 (0.274–0.369)

< 0.001

68.2% (63.1%–72.6%)

Outdoors (N = 1968)

 Untreated control

1451

  

 Guided treatment

201

0.403 (0.345–0.471)

< 0.001

59.7% (52.9%–65.5%)

 Full treatment

316

0.285 (0.222–0.367)

< 0.001

71.5% (63.3%–77.8%)