Variables Number of animals examined  Infection type χ2 P-value     Mixed (polyparasitic) (%) Single (monoparasitic) (%)     Origin       3.6371 0.162   Addis Ababa 151 20(13.25) 63(41.72)       Bishoftu 239 24(10.04) 84(35.15)       Total 390 44(11.28%) 147(37.69)     Sex       0.2139 0.899   Female 218 26(11.93) 82(37.61)       Male 172 18(10.47) 65(37.79)       Total 390 44(11.28) 147(37.69)      Age       2.8104 0.590   Piglet 48 4(8.33) 16(33.33)       Young 41 7(17.07) 16(39.02)       Adult 301 33(10.96) 115(38.21)       Total 390 44(11.28) 147(37.69)

Table 6: Infection type in relation to origin, age and sex, NB: For origin, df =2; age, df=4; sex, df=2, df=degree of freedom