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Table 1 Clinical and parasitological characteristics of the children at enrolment (year 2006): P. falciparum asymptomatic children (AP), children with uncomplicated malaria (UM) and children with severe malaria (SM).

From: The humoral response to Plasmodium falciparum VarO rosetting variant and its association with protection against malaria in Beninese children

Parameters AP (n = 52) UM (n = 37) SM (n = 65) P
Sex ratio (M/F) 0.9 (24/28) 1.8 (24/13) 0.8 (29/36) 0.11 b
Age (yrs)
mean ± SD
6.5 ± 1.3 4.7 ± 3.4 2.9 ± 1.8 AP > UM > SM
(P < 0.0001) c
Parasite density
(/μl) a
811
(369-1,751)
24,900
(3,606-65,440)
61,920
(1,684-192,000)
AP < UM/SM
(P < 0.001) d
  1. a Median parasite density (interquartile range IQ25-75).
  2. b P value of the χ2 test.
  3. c P value of the Student's unpaired-t-test.
  4. d P value of the Mann-Whitney U-test.