Study variables                                        Study subjects p-value
PPF positive PPF negative Control
Number examined 39 39 30  
Mean Age 32.69 28.69 29.3  0.981
Sex M 76.2% 66.7% 65.4% 0.961
F 23.8% 33.3% 34.6
Mean egg excretion 278.6 141.7 - 0.424
Mean antioxidants 107.2 85.8 339.9 0.000
P-value 0.376 - -
Positivity 61.5% 57.8% - 0.145
Table 2: Demographic and parasitological characteristics of 108, whose total antioxidant determined study participants from study sites endemic and non-endemic to S. mansoni , 2011.