Table 3 Multivariate regression analysis of CVA diagnosis and prediction

Cold air as a contributing factor

2.525

1.076

0.019

12.493

1.517 ~ 102.886

Pungent odors

1.379

0.446

0.002

3.969

1.655 ~ 9.519

Cough phase

1.507

0.386

 < 0.001

4.515

2.119 ~ 9.618

Seasonal cough

0.961

0.541

0.076

2.614

0.905 ~ 7.552

History of allergic rhinitis

1.173

0.496

0.018

3.231

1.223 ~ 8.536

Family history of allergies

0.848

0.858

0.323

2.336

0.434 ~ 12.566

FVC

-0.234

0.217

0.282

0.792

0.517 ~ 1.212

FEV₁%pred

0.001

0.020

0.949

1.001

0.963 ~ 1.042

MMEF%pred

-0.020

0.009

0.039

0.981

0.963 ~ 0.999