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Table 3 Significant predictors of hypersensitivity pneumonitis*

From: Hypersensitivity pneumonitis

Variables Odds ratio Confidence interval (95%)
Exposure to a known offending antigen 38.8 11.6 – 129.6
Positive precipitating antibodies 5.3 2.7 – 10.4
Recurrent episodes of symptoms 3.3 1.5 – 7.5
Inspiratory crackles 4.5 1.8 – 11.7
Symptoms 4–8 hours after exposure 7.2 1.8 – 28.6
Weight loss 2.0 1.0 – 3.9
  1. * From Lacasse et al. [4], with permission.