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Table 2 Incidence rate of clinical malaria and protective efficacy after 52 weeks of follow-up per treatment group and age category

From: Impact of intermittent preventive treatment with sulphadoxine-pyrimethamine targeting the transmission season on the incidence of clinical malaria in children in Mali

  <5 years 5–10 years All
  sIPT- sIPT + sIPT- sIPT + sIPT- sIPT +
Number of malaria episodes 127 65 94 65 221 130
Person-days (-years) of follow up 17311 (47.6) 16590(45.6) 20799 (57.1) 24025 (66.0) 38110 (104.7) 40615 (111.6)
Incidence rate malaria disease per 1000 person-days (-years) of follow up 7.3 (2.67) 3.9(1.43) 4.5 (1.65) 2.7 (0.98) 5.8 (2.11) 3.2 (1.16)
Unadjusted PE in % (95% CI) Reference group 46.6 (28.0–60.4 Reference group 40.1 (17.9–56.4) Reference group 44.8 (31.5–55.6)
Age adjusted PE in % (95% CI) Reference group 46.6 (28.0 – 60.4) Reference group 35.9 (11.8–53.4) Reference group 42.5 (28.6 – 53.8)
  1. sIPT - = control group
  2. sIPT + = treatment group
  3. PE = Protective efficacy
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