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Table 3 Results of multivariable analysis for FMD transmission between farms

From: Risk factors for the transmission of foot-and-mouth disease during the 2010 outbreak in Japan: a case–control study

Group Variables Level Odds ratio 95% Confidence interval P-value
Cattle      
  Area A1) herd size large 2.8 1.2-6.7 0.02
   small 1.0   
  farm equipment was shared with other farms Yes 9.6 1.1-80.2 0.04
   No 1.0   
  Constant    - 0.54
  Area B2) herd size large 28.8 5.8-143.4 <0.01
   small 1.0   
  staff of livestock related companies visited the farm Yes 20.4 1.1-383.0 0.04
   No 1.0   
  feed transport vehicles visited the farm Yes 5.1 1.5-16.7 0.01
   No 1.0   
  Constant    - <0.01
Pig      
  Area A3) herd size large 0.7 0.2-3.3 0.70
   small 1.0   
  fattening farm Yes 0.1 0.0-0.4 <0.01
   No 1.0   
  farm staff commuted from outside Yes 20.0 1.8-226.9 0.02
   No 1.0   
  barn has physical barriers Yes 0.1 0.0-0.5 <0.01
   No 1.0   
  Constant    - 0.15
  1. 1) Hosmer-Lemeshow goodness-of-fit chi-square score = 0.1(d.f. = 2, p = 0.97).
  2. 2) Hosmer-Lemeshow goodness-of-fit chi-square score = 3.6 (d.f. = 3, p = 0.30).
  3. 3) Hosmer-Lemeshow goodness-of-fit chi-square score = 5.6 (d.f. = 7, p = 0.59).