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Overall prevalence of Salmonella by sites of samples examined.
| Farms | Number examined | Number positive (%) | χ 2 | df | p value |
|---|---|---|---|---|---|
| Alema | 133 | 28 (21.1) | 7.083 | 2 | 0.029 |
| Aleka Amba | 131 | 16 (12.2) | |||
| Modjo | 120 | 12 (10.0) | |||
| Total | 384 | 56 (14.6) |
df = degree of freedom.
