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Table 1 Variables, significant in the multivariable analysis and their country specific differences in descriptive statistics

From: Correlation of Lawsonia intracellularis positivity in quantitative PCR and herd factors in European pig herds

Variables in questionnaire Statistic DEa DKa ESa FRa NLa UKa Total
% of slatted floor in nursery unit Median 100.0 33.0 100.0 100.0 100.0 100.0 100.0
Minimum 0.0 25.0 70.0 0.0 30.0 0.0 0.0
Maximum 100.0 66.0 100.0 100.0 100.0 100.0 100.0
Straw in units of nursery pigs (1 = No, 2 = Yes) Median 1.0 2.0 1.0 1.0 1.0 1.0 1.0
Minimum 1.0 1.0 1.0 1.0 1.0 1.0 1.0
Maximum 2.0 2.0 1.0 2.0 2.0 2.0 2.0
Frequency of disinfection in nursery (1 = Every time, 2 = Every 2nd time, 3 = Every 3rd time, 4 = Less common) Median 1.0 1.0 1.0 1.0 1.5 1.0 1.0
Minimum 1.0 1.0 1.0 1.0 1.0 1.0 1.0
Maximum 4.0 4.0 1.0 1.0 4.0 2.0 4.0
Average down time in units of growing pigs (Days) Median 3.0 2.4 7.0 4.0 3.0 2.0 3.0
Minimum 0.3 0.0 0.0 0.0 0.0 0.0 0.0
Maximum 14.0 14.5 84.0 10.0 14.0 8.5 84.0
Number of pigs per pen in nursery (n) Median 40.0 34.5 27.0 25.0 26.0 100.0 35.0
Minimum 14.0 16.0 14.0 15.0 6.0 38.0 6.0
Maximum 275.0 50.0 225.0 50.0 200.0 220.0 275.0
Use of antimicrobials at/ around weaning (1 = Never, 2 = Sometimes, 3 = Always) Median 1.0 3.0 3.0 2.0 1.0 3.0 3.0
Minimum 1.0 2.0 2.0 1.0 1.0 1.0 1.0
Maximum 3.0 3.0 3.0 3.0 3.0 3.0 3.0
Use of zinc oxide at/ around weaning (1 = No, 2 = Yes) Median 1.0 2.0 2.0 1.0 1.0 2.0 1.0
Minimum 1.0 1.0 1.0 1.0 1.0 1.0 1.0
Maximum 2.0 2.0 2.0 2.0 1.0 2.0 2.0
Average age at weaning (Days) Median 28.0 28.0 25.0 21.0 26.0 26.5 26.0
Minimum 21.0 24.0 21.0 21.0 21.0 21.0 21.0
Maximum 42.0 33.0 28.0 42.0 42.0 33.0 42.0
Average weight at weaning (kg) Median 7.5 6.5 6.0 6.0 7.5 7.5 7.0
Minimum 5.5 5.0 5.2 5.3 5.0 6.5 5.0
Maximum 10.0 10.5 7.9 10.5 10.0 9.2 10.5
Total mortality in nursery pigs (%) Median 2.0 2.6 2.5 2.4 2.0 2.0 2.1
Minimum 0.5 1.0 0.8 1.0 1.0 1.0 0.5
Maximum 5.0 6.1 7.0 8.1 6.0 6.0 8.1
Morbidity of growing pigs at last occurrence of diarrhea on farm (%) Median 0.0 1.5 0.0 0.0 0.5 3.0 0.0
Minimum 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Maximum 50.0 55.0 50.0 100.0 20.0 30.0 100.0
  1. The table is based on data of 24 herds per country and qPCR results of 6450 faecal samples. Data was not normally distributed
  2. aDE Germany, DK Denmark, ES Spain, FR France, NL the Netherlands, UK United Kingdom