Table 4 Overall mortality (unadjusted and adjusted) of An. gambiae s.l. and risk ratios for partial spraying treatments in reference to full spraying, over the nine-month post-spray collection period.

From: Efficacy of partial spraying of SumiShield, Fludora Fusion and Actellic against wild populations of Anopheles gambiae s.l. in experimental huts in Tiassalé, Côte d'Ivoire

Insecticide

Hut treatment

% Mortality unadjusted (95% CI)

% Mortality adjusted1 (95% CI)

Risk ratio (95% CI)

p-value

 

Unsprayed

6.5 (92.0, 94.7)

6.6 (5.7, 7.5)

–

 

Actellic 300 CS*

Full spray

88.3 (86.5, 89.9)

88.5 (87.7, 89.3)

Ref

 

BH + C

88.2 (86.4, 89.8)

88.3 (85.1, 91.4)

0.998 (0.961, 1.035)

0.9

TH + C

80.7 (78.3, 82.9)

80.8 (74.5, 87.1)

0.913 (0.842, 0.985)

0.0174

Fludora fusion WP-SB**

Full spray

85.8 (84.2, 87.4)

85.6 (81.5, 89.7)

Ref

 

BH + C

83.8 (82.2, 85.2)

83.7 (82.9, 84.5)

0.978 (0.931, 1.026)

0.3697

TH + C

80.8 (79.1, 82.5)

81.3 (79.6, 83.0)

0.950 (0.900, 0.999)

0.0468

SumiShield 50 WG**

Full spray

87.0 (85.3, 88.6)

86.7 (85.3, 88.1)

Ref

 

BH + C

85.8 (84.3, 87.2)

85.6 (85.4, 85.8)

0.987 (0.971, 1.003)

0.12

TH + C

77.0 (75.1, 78.8)

76.9 (76.6, 77.3)

0.887 (0.872, 0.903)

 < 0.001

  1. BH bottom half, TH top half, C ceiling.
  2. *Mortality at 24 h after collection.
  3. **Mortality at 120 h after collection.
  4. 1Generalized linear model with repeated measures for hut, adjusting for time since spray date, in months.
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