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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).