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Table 6 Final multivariable logistic regression model for the association of clinical signs and broncho-alveolar lavage fluid characteristics with eosinophil and basophil percentage in broncho-alveolar lavage fluid of 352 group-housed calves

From: Factors associated with lung cytology as obtained by non-endoscopic broncho-alveolar lavage in group-housed calves

Cell type Variable Category Calves
(n =)
Percentage OR 95% CI P-value
Eosinophils a Lung auscultation Normal 159 3.8% Referent   
Abnormal 193 8.8% 2.8 1–8.1 0.05
Basophils b H. somni
culture
Negative 340 9.1% Referent   
Positive 12 50.0% 1.4 2.9–45.5 < 0.001
BALf bloodstaining Absent 313 9.3% Referent   
Present 39 20.5% 3.2 1.2–8.3 0.02
Lung consolidation > 3 cm in depth Absent 245 7.3% Referent   
Present 107 17.8% 2.6 1.2–5.6 0.01
  1. BALf broncho-alveolar lavage fluid. Random herd effect was significant for eosinophils (P = 0.03) and not significant for basophils (P = 0.20)
  2. a Cut-off > 1% eosinophils
  3. b Cut-off = ≥ 1 basophil counted on 400 cells
  4. OR odds ratio, CI confidence interval