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Table 2 Risk factors for Salmonella enterica at farm

From: Antibiograms and risk factors of Salmonella isolates from laying hens and eggs in Jimma Town, South Western Ethiopia

Variable

Frequency (%)

Univariable

Multivariable

COR (95% CI)

P-value

AOR (95% CI)

P-value

Number chicken

 63

10 (3.7)

0 (0–0.032)

0.999

  

 106

20 (7.4)

0 (0–058)

0.998

  

 328

55 (20.4)

1.754 (0.006–514)

0.846

  

 1150

185 (68.5)

1.00

   

Chicken kept system

 Cage

185 (68.5)

3.534 (0.05–2.3)

0.702

  

 Open

85 (31.5)

1.00

   

Fodder method

 Manual

70 (100)

    

 Egg collecting method

 Manual

270 (100)

    

Wash hand after use of toilet

 

1.00

   

 Yes

106 (39.3)

21.4 (1.285–337)

0.033

0.066 (0.005–0.809)

0.034

 No

164 (60.7)

1.00

   

Disinfection bath

 Yes

137 (50.7)

0.63 (0.025–15.5)

0.775

  

 No

133 (49.3)

1.00

   

Separating cracked eggs

 Yes

119 (44.1)

28.4 (1.28–629.4)

0.034

0.062 (0.005–0.802)

0.033

 No

151 (55.9)

1.00

   

Dirty eggs clean

 Yes

56 (20.7)

9.57 (0.025–15.5)

0.162

0.164 (0.021–1.276)

0.084

 No

214 (79.3)

1.00

   

Wear special wear

 Yes

79 (29.3)

0.75 (0.030–18.7)

0.861

  

 No

191 (70.7)

1.00

   

Other people enter farm

 Yes

139 (51.5)

0.2 (0.05–10.32)

0.451

  

 No

131 (48.5)

1.00

   

Excreta mix with feed

 Yes

225 (83.3)

0.1 (0.003–3.1)

0.190

19.87 (2.234–176.79)

0.007

 No

45 (16.7)

1.00

   

Washing egg container

 Yes

159 (58.9)

0.5 (0.032–8.2)

0.635

  

 No

111 (41.1)

1.00

   

Excreta mix with the eggs

 No

134 (49.6)

0.23 (0.016–3.12)

0.266

  

 Yes

136 (40.4)

1.00

   

Treated with medication

 Yes

24 (8.9)

20.67 (0.612–0.700)

0.092

0.082 (0.004–1.497)

0.09

 No

246 (91.1)

1.00