Acute bronchiolitis in infancy as risk factor for wheezing and reduced pulmonary function by seven years in Akershus County, Norway

Table 2 Risk factors in family members of children hospitalised or not with acute bronchiolitis in infancy

Reported at child age seven years	Hospitalised group			Not hospitalised group
No. families with risk factors^a	RS- (n = 22)	RS+ (n = 35)	Both (n = 57)	Controls (n = 64)
Allergy before seven years	8	13
Current allergy	12	16	28	33
Eczema before seven years	6	7
Current eczema	8	14	22	28
Asthma before seven years	10	8
Current asthma^b	10	12	22	12
Siblings <6 years before seven years	12	22
Current siblings <6 years	6	11	17	26
Parental smoking before seven years	10	16
Current parental smoking	10	19	29	28

^a Risk factors in first order family members (mother, father, siblings) as reported by parents
^b P = 0.015 with chi square test between the hospitalised group and not hospitalised group

ISSN: 1471-2431