Ab subclasses Ab concentration (µg/ml) Crude rate ratio (95%CI) Adjusted for confounders LR test
AMA1 IgG1 0-368 1 1   X2=6.91 (2), P=0.0316 N=299
369-905 0.78 (0.48-1.26) 0.79 (0.45-1.37)
>905 0.48 (0.28-0.85) 0.39 (0.19-0.81)
AMA1 IgG3 0-11 1 1 X2=0.77 (2), P=0.6792 N=299
12-65 0.59 (0.35-0.97) 1.15 (0.64-2.07)
>65 0.46 (0.27-0.79) 0.85 (0.43-1.71)
MSP119 IgG1 0-28 1 1 X2=2.75 (2), P=0.2534 N=320
29-173 0.66 (0.42-1.04) 0.97 (0.58-1.65)
>173 0.25 (0.13-0.47) 0.57 (0.27-1.20)
MSP119 IgG3 0-6 1 1 X2=3.43 (2), P=0.1799 N=320
7-27 0.43 (0.26-0.71) 0.59 (0.34-1.05)
>27 0.35 (0.20-0.60) 0.73 (0.37-1.41)
CSP IgG1 <2 1 1 X2=9.2 (2), P=0.0101 N=401
2-93 0.51 (0.34-0.77) 0.68 (0.41-1.13)
>93 0.22 (0.12-0.39) 0.39 (0.20-0.76)
CSP IgG3 <2 1 1 X2=1.41 (2), P=0.4932 N=401
2-99 0.45 (0.29-0.70) 0.79 (0.47-1.34)
>99 0.59 (0.40-0.88) 1.10 (0.68-1.79)
LR: Logistic Regression; CI: Confidence Interval; X2: Chi squared; P: p-value; N: Number of individuals tested
Table 4: Malaria incidence in association with AMA1, CSP and MSP119 antibody subclasses levels adjusted for all confounders.