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Table 7 Multivariate logistic regression analysis of predictors for persistent asthma at follow-up

From: Diisocyanate-induced asthma in Switzerland: long-term course and patients’ self-assessment after a 12-year follow-up

  “A priori” “A posteriori”
   Predictive Descriptive
  Model 1 Model 2 Model 3 Model 4
Dependent variables Persistent asthma symptoms at follow-up Persistent NSBHR at follow-up Persistent asthma symptoms at follow-up Persistent asthma symptoms at follow-up
Co-variates     
Age at T0 0.08 (p = 0.02) 0.03 (p = 0.35) 0.04 (p = 0.27)  
Age at T1     0.09 (p = 0.06)
Total exposure time   -0.02 (p = 0.04)   
Symptomatic exposure time 0.01 (p = 0.37) 0.03 (p = 0.10)   
Upper airway symptoms at T0    -1.91 (p = 0.12)  
Upper airway symptoms at T1     1.36 (p = 0.29)
FEV1/FVC at T0    -0.11 (p = 0.05)  
Asthma medication at T1     2.85 (p < 0.001)
Intercept -2.90 -0.32 9.01 -5.98
R2 0.22 0.28 0.39 0.55
  1. Legend: FVC = forced expiratory vital capacity, FEV1 = forced expiratory volume in 1 second. NSBHBR = non specific bronchial hyperreactivity. R2 = Nagelkerke R Square. Data are presented as B-coefficient (p-value).