Skip to main content

Table 3 Estimated incidence rates by treatment arm and estimated intervention effects

From: A cluster-randomized controlled trial to assess the effectiveness of using 15% DEET topical repellent with long-lasting insecticidal nets (LLINs) compared to a placebo lotion on malaria transmission

 

Intervention arm

Control arm

% Reduction in rates

Wilcoxon rank-sum on residuals (p-value)

Malaria cases

115

137

  

ATP analysis

    

Individuals randomized

2208

2168

  

Households randomized

463

462

Total person-years

1952.81

1972.38

  

Average Household rates/1000 person-years

60.12 (95% C.I 45.08-75.15)

84.54 `(95% C.I 61.04 108.05)

24.42%

-1.267 (0.2051)

S.D.

164.42

257.07

  

Average cluster rates/1000 person-years

60.45 (95% C.I 48.30 72.60)

68.29 (95% C.I 37.05-99.53)

8%

0.529 (0.596)

S.D.

16.98

43.66

  

ITT analysis

    

Individuals randomized

2224

2202

  

Households randomized

468

469

Total person-years

2580.44

2554.92

  

Household rates/1000 person-years

47.26 (95% C.I. 35.49-59.04)

68.21 (95% C.I. 49.59-86.84)

20.95%

-1.268 (0.2047)

S.D.

129.60

205.23

  

Cluster rates/1000 person months

45.43 (95% C.I 36.02–59.79)

53.21 (95% C.I. 30.98–104.16)

7.78%

0.227 (0.8206)

S.D.

11.32

34.90

 Â