Natural antibody response to Plasmodium falciparum merozoite antigens MSP5, MSP9 and EBA175 is associated to clinical protection in the Brazilian Amazon

Table 3 Adjusted effects of categorized variables which predict a lower risk for symptoms in a multivariate model

Variables	Log rank test	Odds ratio	Confidence interval 95% for OR
RI EBA175	X² (2) = 14.660
3° Tercile x 1° Tercile	p < 0.001	8.000	1.686–37.951
RI EBA175	X² (2) = 20,775 p < 0.000	5.757	1.119–29.627
3° Tercile x 1° Tercile		5.757	1.119–29.627
RI MSP5		9.447	1.289–69.256
3° Tercile x 2° Tercile		9.447	1.289–69.256

A significant result indicates that strong responders against the indicated antigens are more likely to remain symptom-free. The terciles inform which ranked groups of responses were compared. See the Methods section for calculation of values.

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