Table 3 Multivariable logistic regression analysis of E. coli O157:H7 occurrence with various risk factors
Risk factors | Adjusted OR | 95% CI OR | p-value |
|---|---|---|---|
Area | |||
 Rural | – | – | – |
 Urban | 9.32 | 1.79–48.60 | 0.008** |
Cleaning of pens | |||
 No stay overnight | – | – | – |
 Stay overnight | 50 | 7.69–50.0 | 0.000*** |
Milking location | |||
 In barn | – | – | – |
 Anywhere | 16.67 | 3.03–83.33 | 0.001** |
Hand wash | |||
 Before and after milking | – | – | – |
 Only before milking | 8.51 | 1.88–38.49 | 0.005** |
Floor type | |||
 Earthen | – | – | – |
 Concrete | 48.74 | 3.49–680.66 | 0.004** |