Table 1.

Prognostic factors.

Category	Prognostic factors
Demographic	age, sex, ethnicity#, height, weight, waist's perimeter, residence#
Wheezing episodes	until 3rd year, between 3rd and 5th year
Symptoms	wheezing*, cough*, allergic rhinitis*, runny nose*, congestion*, eczema*, food allergy*, pharmaceutical allergy*, allergic conjunctivitis*, dyspnea*, seasonal symptoms#
Parental history	asthma*
House conditions	number of family members, pets*, type of heating#
Pharmaceutical therapy	bronchodilators, corticosteroids inhaled*, corticosteroids per os*, antileukotriene*, antihistamine*
Breathing tests	FEV1%, FEF25/75%
Tests	Ig E U/Ml
Allergens	d.  pteronyssinus #, d.  farinae #, olive#, pellitory#, graminaceae#, pine#, cypress#, cat#, dog#, alternaria #
Neonatal period	pregnancy duration, breastfeeding duration#, smoking during pregnancy*
Asthma	treatment*

*The encoding is binary: yes (1) or no (0).

^#The encoding is shown in Table 2.

All other factors are numerical.