Figure 4From: Protection of Malian children from clinical malaria is associated with recognition of multiple antigens Relationship between age and clinical protection. (A) The age of all children who developed parasitaemia by PCR or thick smear during follow-up (total n = 91) in the asymptomatic (n = 47) and symptomatic groups (n = 44) is plotted. Scatter plots show individual data points, horizontal lines indicate the median of the group and error bars the interquartile range (IQR). The two groups were compared using Mann–Whitney U test. (B) The proportion of children experiencing 0, 1, 2 or 3 clinical episodes was calculated for the three different age groups (two to five years, six to nine years and ten to 14 years) and analysed as count data by Poisson analysis.Back to article page