Table 3

Results of the univariable survival analyses performed on 463 tuberculosis outbreaks declared in 1997–2009 in the Autonomous Community of Madrid after removal of outliers (n = 18) and outbreaks resolved by herd depopulation (n = 34)
Survival Analysis Number of outbreaks Resolved outbreaks Median time for recovery of OTF status (days) (95% CI) Probability (hazard ratio) (95% CI) P
Productive type
 Beef 300 292 532 (453–610) NA NA
 Dairy 131 118 349 (316–393) 1.46 (1.17-1.81) <0.001
 Bullfighting 32 28 607 (385–751) 0.9 (0.61-1.33) 0.6
Period
 Before 2006 365 365 517 (453–575) NA NA
 Since 2006 98 73 307 (259–359) 2.18 (1.68-2.83) <0.001

NA non-applicable.

Alvarez et al.

Alvarez et al. BMC Veterinary Research 2012 8:100   doi:10.1186/1746-6148-8-100

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