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Table 1 Seroprevalence of IgG antibodies to PfGPI in Papua New Guinean children

From: IgG antibodies to synthetic GPI are biomarkers of immune-status to both Plasmodium falciparum and Plasmodium vivax malaria in young children

  Study start Study end P value
IgG levela in children (% of adult levels)  
Geometric mean 95% CI 0.096 (13.87) 0.108 (15.62) 0.11
0.083 (11.99) 0.093 (13.44)
0.110 (15.90) 0.127 (18.35)
Cut-offa low antibody group 0.061 (8.75)   
Cut-offa medium antibody group 0.135 (19.53)   
  1. P values from paired 2-tailed t tests or Chi squared tests. P < 0.05 were deemed statistically significant
  2. 95% CI 95% confidence interval
  3. aOptical density at 450 nm
  Study start Study end  
Prevalence in children (%)
% of adult levels (cut-offa)
 1% (0.007) 223 (100) 223 (100)  
 5% (0.035) 200 (89.67) 196 (87.89) 0.55
 10% (0.069) 133 (59.64) 144 (64.57) 0.28
 25% (0.173) 55 (24.66) 71 (31.84) 0.09
 50% (0.346) 26 (11.66) 36 (16.14) 0.17
  1. P values from paired 2-tailed t tests or Chi squared tests. P < 0.05 were deemed statistically significant
  2. 95% CI 95% confidence interval
  3. aOptical density at 450 nm