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

Table 1 Follow-up of children hospitalised or not with acute bronchiolitis in infancy

Reported at child age seven years	Hospitalised group				Not hospitalised group
	RS- (n = 22)	RS+ (n = 35)	95% CI^a	Both (n = 57)	Controls (n = 64)	95% CI^a
Age, mean (range) at hospitalisation, months	5.9 (0–11)	5.1 (0–9)	-0.8 2.5
Length, mean (range) of hospitalisation, days	4.6 (2–20)	4.8 (2–14)	-2.1 1.8
Birth weight, mean (range), grams^b	3507 (2420–4300)	3506 (2500–4045)	-225.6 228.5	3506 (2420–4300)	3733 (2100–5220)	-425.2 -27.7
Weight, mean (range) at follow-up visit, kg	27.5 (23–42)	28.3 (22–53)	-4.0 2.4	28.0 (22–53)	29.2 (20–45)	-0.8 3.2
Height, mean (range) at follow-up visit, cm	127.7 (118–139)	127.3 (117–146)	-2.8 3.7	127.4 (117–146)	128.6 (115–145)	-1.0 3.4
Age, mean (range) at follow-up visit, months	93.6 (86–101)	92.8 (86–102)	-1.2 2.9	93.1 (86–102)	94.0 (88–99)	-0.4 2.2
No. boys (%)	12 (54)	20 (57)		32 (56)	36 (56)

^a 95% confidence interval (CI) of difference between means
^b P = 0.023 with independent samples T-test between the hospitalised and not hospitalised group

ISSN: 1471-2431