Measures Effect Variables

No of study animals

Proportion of Salmonella 95% CI*

χ²

P-Value

Non-Treated Group (Control)

30

21/30 (0.70), [0.51 - 0.85]

13.01

0.000

EM Feed Group (Treatment)

100

33/100 (0.33), [0.24 - 0.43]

Risk Difference (Absolute Risk)

*

0.37 (0.17 - 0.57)

Relative Risk

*

2.12 (1.41 - 3.20)

Relative Risk Reduction

*

0.53 (0.29 - 0.69)