Table 1.

Sociodemographic data

	Risk factors	Students with allergic rhinitis	p value
Gender	female	115 (16.8%)	0.015
	male	77 (12.1%)
Smoking habits of parents	none	75 (12.2%)	0.0024
	only mother	13 (13.5%)
	only father	68 (15.5%)
	both parents are smokers	36 (21.3%)
Heating device used in the house	floor heating	53 (15.3%)	0.172
	central system	65 (13.7%)
	wood stove	24 (11.4%)
	coal stove	44 (17.2%)
	room heater (with electric)	6 (15.8%)
Room sharing	single	73 (13.1%)	0.214
	sharing room with one or more people	119 (15.5%)
House type	apartment	180 (15.4%)	0.014
	others	12 (8.4%)
Owning pets	none	126 (13.8%)	0.040
	pet owner	66 (16%)
	owner of only cat/dog	9 (18%)
Age of the mother at delivery	average age of the mother in students with allergic rhinitis	25.5±5.1	0.163
	average age of the mother in students with no allergic rhinitis	26.1±4.7