Risk of impaired consciousness in relation to parasite exposure in three-monthly samples among 61 cases with severe malaria.

Unmatched case-control analysis performed with exact logistic regression adjusted for age and number of samples, defining patients with impaired consciousness as “cases” (n = 32) and those with non-cerebral severe malaria as “controls” (n = 29).a. including PCR and/or microscopy results.b. including only PCR results.c. antibodies to schizont extract detected in at least one of the three most recent visits before admission in the cases and corresponding time in the controls.