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Table 1 Efficacy of topical repellents against Plasmodium falciparum

From: Are topical insect repellents effective against malaria in endemic populations? A systematic review and meta-analysis

Study

Repellent

Control

Risk ratio (95% confidence intervals)

 

Cases

Population at risk

Cases

Population at risk

Chen-Hussey et al.[34]

35

3,947

33

3,961

1.06 (0. 66-1.71)

Dadzie et al.[31]

54

205

47

204

1.14 (0.81-1.61)

Deressa et al.1[29]

23

2,399

19

2,273

1.15 (0.63 - 2.10)

Dutta et al.[32]

-

-

-

 

Yr 1: 1.16 (0.85-1.58)

 

Yr 2: 1.20 (0.83-1.72)

Hill et al.[33]

1

2,041

6

1,967

0.16 (0.02-1.33)

Kroeger et al.2[37]

8.5%

 

6.7%

 

1.273

McGready et al.4[36]

40

379

30

202

0.71 (0.46-1.11)

Sangoro et al.5[30]

115

2,224

137

2,202

0.83 (0.65-1.06)

Rowland et al.[35]

23

618

47

530

0.42 (0.26-0.68)

  1. 1Denominator is average of two follow up surveys, number of infections is combined total from two follow-up surveys - based on assumption that infections at 2-month time point were new infections (1 month between follow-up surveys); 2Trial conducted in two sites. This data is from Ecuador where according to manuscript 86% of cases were usually due to P. falciparum. Since parasite species of cases was not determined, these cases were attributing to P. falciparum; 3Counts and denominators not reported in manuscript so unable to calculate 95% confidence intervals; 4Cases and denominator back-calculated from percentages and confidence intervals reported in paper; 5number of cases/denominator taken from published manuscript not study report.