Study variables Number (%) Sm* positive Mean egg excretion per gram of stool Number (%) positive for hl* other than Sm*
Age category     <10 118,3(19.1)      27.9 9(29.1)
11-20 91, 5(30.9)     109.2 9(29.1)
21-30 67,3(21.1)      89.2 6(19.4)
31-40 63,2(13.8)      30.1 2(6.5)
>40 75,2 (15.1)       40 5(16.1)
   p-value 0.000       0.002 0.359
Sex Male 204(52.6)        67.2   20(64.5)
female 210(47.4)        52.8 11(35.5)
p-value 0.298        0.299 0.110
PPF Positive   39(61.5)        150.76 3(9.7)
negative   375(35.7)        48.57 28(90.3)
p-value   0.000 0.03 0.959
Table 1: Prevalence, intensity of S. mansoni infections and other helminths infections by age, sex and PPF status among 414 subjects from Cheretee, 2011. (*S. mansoni , hl= helminth).