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Table 1 Effect of combining indoor residual spraying (IRS) and long-lasting insecticide-treated nets (LLINs) interventions 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

IRS only

21

2811

1

 

0.008

Unprotected

7

273

3.496

1.473 - 8.300

0.005

LLINs only

5

228

2.979

1.113 - 7.975

0.030

IRS + LLINs

19

2297

1.108

0.594 - 2.066

0.747

  1. IRS: indoor residual spraying; LLINs: long lasting insecticide-treated nets;
  2. OR: odds ratio; IC: confidence interval.