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Table 1 Characteristics of 193 Cameroonian children in three age groups living in the Ngali II and Ntouessong villages

From: Antibody responses to the full-length VAR2CSA and its DBL domains in Cameroonian children and teenagers

  1–5 years 6–10 years 11–15 years p*
Number of children 21 105 67
Number of male children (number, %) 10 (48%) 54 (51%) 43 (64%) 0.06
Malaria-positive by blood smears (number, percent)a 3 (14%) 64 (61%) 33 (49%) 0.0004
Malaria parasitaemia (parasites per µL, median and 25th, 75th percentile in parentheses)b 360 (360, 1320) 320 (170, 780) 360 (120, 590) 0.5
ITN use (number, %) 11 (52%) 70 (67%) 38 (57%) 0.3
Hemoglobin levels in g/dL (mean ± SD) 11 ± 2.3 11.7 ± 1.9 13 ± 1.7 <0.0001
Anemia (number, %)c 8 (38%) 47 (45%) 12 (18%) 0.001
  1. * Proportions were compared using Chi square trend test, continuous variables were compared using ANOVA or Kruskal–Wallis test
  2. aBlood smears were evaluated by microscopy for presence of P. falciparum, P. ovale, and P. malariae, Only P. falciparum was detected
  3. bCalculated only for smear-positive individuals
  4. cCut-offs for anemia: children 0–5 years < 11 g/dL; 6-10 years < 11.5 g/dL; 11-15 years < 12 g/dL