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Table 3 Adjusted incidence rate ratios for immunological variables independently associated with malaria risk in the final model

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

Immunological variables Adjusted IRR (95%CI) Wald P-value LR test
MSP1-3D7 IgG Values transformed to log base 2 0.84 (0.73, 0.97) P = 0.02  
AMA1-3D7 IgG Values transformed to log base 2 0.84 (0.74, 0.96) P = 0.01  
Age group 12 <24 months 1   χ2 = 21.24, p < 0.001
  24 <36 months 0.94 (0.44,2.01) P = 0.88  
  36 <48 months 0.33 (0.14,0.77) P = 0.01  
  48 <60 months 0.21 (0.08,0.51) p < 0.01  
  60 <73 months 0.24 (0.09,0.66) P = 0.01  
  1. IRR indicates the ratio of malaria incidence rates associated with a twofold increase in antibody level; Parasite cut off is 5000+