Districts No. Positive results (%)
Arsi-negsele 128  76 (59.40%)
Shashemene 128 73 (57.0%)
Kofele 128 39 (30.5%)
Total 384 188 (49 %)
X2=32.2; P= 0.000
Table 3: Prevalence of gastro intestinal nemathods and emeria within different districts in west Arsi zone.