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Table 2 Effects of IRS, LLINs, unadjusted, and adjusted for each other on malaria infection in Príncipe for the year 2009

From: Pre-elimination of malaria on the island of Príncipe

Intervention Malaria cases Total cases OR 95% CI P value Adjusted OR 95% CI P value
IRS No 12 501 1      
  Yes 40 5108 0.322 0.168-0.617 0.001 0.286* 0.120-0.679 0.005
LLINs No 28 3084 1      
  Yes 24 2525 1.047 0.606-1.811 0.869 0.852** 0.267-2.722 0.787
IRS + LLINs        1.301 0.348-4.858 0.696
  1. RS: indoor residual spraying; LLINs: long lasting insecticide-treated nets; OR: odds ratio; IC: confidence interval.
  2. *Adjusted for effect of LLINs.
  3. **Adjusted for effect of IRS.