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Table 2 Percentage of shared abattoirs between sentinel selection approaches

From: Suitability of sentinel abattoirs for syndromic surveillance using provincially inspected bovine abattoir condemnation data

Selection approaches Full dataset 1 (N = 98) Abattoirs open all weeks 2 (N = 45) Selection criteria 3 (N = 44) Large abattoirs 4 (N = 7)
Full dataset 1 (N = 98) 100% (98) 45.9% (45) 44.9% (44) 7.1% (7)
Abattoirs open all weeks 2 (N = 45) 45.9% (45) 100% (45) 71.1% (32) 15.6% (7)
Selection criteria 3 (N = 44) 44.9% (44) 71.1% (32) 100% (44) 6.8% (3)
Large abattoirs 4 (N = 7) 7.1% (7) 15.6% (7) 6.8% (3) 100% (7)
  1. 1Abattoirs processing at least 1 bovine carcass each year of study period (2001 – 2007).
  2. 2Abattoirs processing at least 1 bovine carcass 52 weeks per year.
  3. 3Selection of abattoirs meeting the following criteria: processed at least 499 cattle per year, processed at least 1 bovine carcass 44 weeks or more per year, processed cattle representing all animal classes (calves, cows, heifers and steers).
  4. 4Abattoirs processing ≥ 6500 cattle per year.