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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+