Skip to main content

Table 4 Tabulation of hypothetical data on incidence by active case detection in high and low resistance clusters, showing loss of effectiveness of second intervention (IRS)

From: Design of a study to determine the impact of insecticide resistance on malaria vector control: a multi-country investigation

Insecticide resistance Vector control Incidence (cases per 1,000 person years) Rate ratio (LLIN + IRS versus LLIN) Change in effectiveness ratio (high versus low resistance)
Low LLIN 100 1  
LLIN + IRS 40 0.4 1
High LLIN 100 1  
LLIN + IRS 80 0.8 2.0 [95% CI 1.1–5.0; p = 0.04]