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Table 3 Unconditional associations among risk factors and human Salmonella Enteritidis infections by phage type, Ontario, Canada (n = 199)

From: Evaluating risk factors for endemic human Salmonella Enteritidis infections with different phage types in Ontario, Canada using multinomial logistic regression and a case-case study approach

Exposure

Outcome [Yes/No] †

OR a) (95% CI b ) †

Any dog contact

Non-PT8/non-PT13a [22/48)]

-

 

PT8 [34/39]

1.90 (0.96-3.76) *

 

PT13a [15/34]

0.96 (0.44-2.12)

Any cat contact

Non-PT8/non-PT13a [18/54]

-

 

PT8 [21/52]

1.21 (0.58-2.53)

 

PT13a [9/40]

0.68 (0.27-1.66)

Any egg consumption

Non-PT8/non-PT13a [34/35]

-

 

PT8 [38/28]

1.40 (0.71-2.75)

 

PT13a [26/20]

1.34 (0.63-2.83)

Runny egg consumption

Non-PT8/non-PT13a [11/20]

-

 

PT8[11/21]

0.95 (0.34-2.68)

 

PT13a [7/16]

0.80 (0.25-2.52)

Undercooked egg consumption

Non-PT8/non-PT13a [11/19]

-

 

PT8 [12/19]

1.09 (0.39-3.07)

 

PT13a [8/15]

0.92 (0.30-2.87)

Egg consumption away from home

Non-PT8/non-PT13a [10/24]

-

 

PT8 [13/24]

1.30 (0.48-3.53)

 

PT13a [9/17]

1.27 (0.43-3.79)

Any chicken consumption

Non-PT8/non-PT13a [61/7]

-

 

PT8 [55/14]

0.45 (0.17-1.20)

 

PT13a [34/11]

0.35 (0.13-0.99) *

Processed chicken consumption

Non-PT8/non-PT13a [7/20]

-

 

PT8 [4/22]

0.52 (0.13-2.04)

 

PT13a [4/11]

1.04 (0.25-4.35)

Fresh chicken consumption

Non-PT8/non-PT13a [21/6]

-

 

PT8 [19/6]

0.90 (0.25-3.29)

 

PT13a [12/3]

1.14 (0.24-5.42)

Frozen chicken consumption

Non-PT8/non-PT13a [2/23]

-

 

PT8 [8/20]

4.60 (0.87-24.22) *

 

PT13a [5/10]

5.75 (0.95-34.79) *

Fast food chicken consumption

Non-PT8/non-PT13a [10/48]

-

 

PT8 [12/39]

1.48 (0.58-3.78)

 

PT13a [8/24]

1.60 (0.60-4.58)

Chicken consumption away from home

Non-PT8/non-PT13a [37/23]

-

 

PT8 [32/22]

0.90 (0.43-1.92)

 

PT13a [21/13]

1.00 (0.42-2.39)

Cheese consumption

Non-PT8/non-PT13a [50/16]

-

 

PT8 [47/20]

0.75 (0.35-1.62)

 

PT13a [32/12]

0.85 (0.36-2.04)

Peanut butter consumption

Non-PT8/non-PT13a [16/51]

-

 

PT8 [23/46]

1.59 (0.75-3.38)

 

PT13a [8/36]

0.71 (0.27-1.83)

Carrot consumption

Non-PT8/non-PT13a [25/44]

-

 

PT8 [21/45]

0.82 (0.40-1.68)

 

PT13a [16/31]

0.91 (0.42-1.98)

Pepper consumption

Non-PT8/non-PT13a [17/52]

-

 

PT8 [8/60]

0.41 (0.16-1.02) *

 

PT13a [9/36]

0.76 (0.31-1.91)

Onion consumption

Non-PT8/non-PT13a [13/57]

-

 

PT8 [15/53]

1.24 (0.54-2.85)

 

PT13a [9/36]

1.20 (0.43-2.83)

Lettuce consumption

Non-PT8/non-PT13a [40/26]

-

 

PT8 [41/26]

1.03 (0.51-2.06)

 

PT13a [26/18]

0.94(0.43-2.04)

Spinach consumption

Non-PT8/non-PT13a [6/63]

-

 

PT8 [10/60]

1.75 (0.60-5.11)

 

PT13a [4/42]

1.00 (0.27-3.76)

Tomato consumption

Non-PT8/non-PT13a [37/32]

-

 

PT8 [24/40]

0.52 (0.26-1.04) *

 

PT13a [23/22]

0.90 (0.43-1.92)

Strawberry consumption

Non-PT8/non-PT13a [27/41]

-

 

PT8 [22/44]

0.76 (0.37-1.54)

 

PT13a [10/31]

0.49 (0.21-1.16)

  1. † Univariable multinomial logistic regression model, comparing PT8 and PT13a to non-PT8/non-PT13a. a) OR - Odds Ratio. b) CI – Confidence Interval of the OR. * Variables with P ≤ 0.1 were used for the multivariable analysis.
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