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Table 1 Characteristics of the study population

From: Antibody levels to multiple malaria vaccine candidate antigens in relation to clinical malaria episodes in children in the Kasena-Nankana district of Northern Ghana

Characteristics Cumulative incidence of malaria Child year at risk No. of malaria episodes Incidence rate per 100 child year (95% CI)
Age group     
12 <24 months 52.5% (21/40) 34.9 28 80 (55, 116)
24 <36 months 31.5% (17/54) 46.1 24 52 (35, 78)
36 <48 months 12.8% (10/78) 75.1 12 16 (9, 28)
48 <60 months 10.3% (8/78) 76.4 9 12 (6, 23)
60 <73 months 10.8% (7/65) 62.2 7 11 (5, 23)
Baseline P. falciparum parasitemia level     
   Negative 41.4% (24/58) 52.1 31 59 (42, 84)
   Positive 15.2% (39/257) 242.7 49 20 (15, 27)
TOTAL 20% (63/315) 295.1 80 27 (22, 34)
  1. Clinical malaria is defined as history of fever or temperature>= 37.5 and parasite density>= 5000 u/l