Table 1.

Clinical characteristics of patients left for downstream analysis, classified as recurrent wheezing RSV (RW-RSV), asthma RSV (AS-RSV), and complete recovery RSV cases (CR-RSV).

	CR-RSV (n = 28)	RW/AS-RSV (n = 40)	P-value
Demographic variables
Sex Male	17 (60.07%)	28 (70.0%)	0.447
Age in months (mean [SD])*	7.14 [5.32]	5.85[3.62]	<0.001
Ethnicity			0.184
Western Europe	24 (85.7%)	36 (90.0%)	–
Southern Europe	2 (7.1%)	1 (2.5%)	–
Southern America	1 (3.6%)	0	–
Roma	0	3 (7.5%)	–
Other	1 (3.6%)	0	–
RSV infection	28 (100.0%)	40 (100.0%)	1.000
Past medical history prior to RSV-A
Premature	4 (14.3%)	4 (10.0%)	0.717
Atopic Dermatitis*	2 (7.1%)	13 (32.5%)	0.017
Alimentary allergies	1 (3.6%)	5 (12.5%)	0.399
Stational allergies	0	2 (5.0%)	0.508
Asthma	0	0	1.000
Admissions prior to RSV	10 (35.7%)	12 (27.0%)	0.399
Annual bronchitis prior the RSV-A*	3 (10.7%)	21 (52.5%)	0.005
Family history
Asthma	4 (14.3%)	14 (35.0%)	0.052
Respiratory problems	5 (17.9%)	15 (37.5%)	0.053
Clinical characteristics of the RSV-H
Respiratory distress			0.147
Mild	8 (28.6%)	4 (10.0%)
Moderate	16 (57.1%)	29 (72.5%)
Severe	4 (14.3%)	7 (17.5%)
Oxygen requirement	23 (82.1%)	25 (62.5%)	0.107
Respiratory support			0.128
Non-invasive	3 (10.7%)	8 (20%)
Mechanical	2 (7.1%)	0
Diagnosis			0.093
Bronchiolitis	25 (89.3%)	31 (77.5%)
Bronchospasm	0	1 (2.5%)
Pneumonia	2 (7.1%)	2 (5.0%)
Other	1 (3.6)	6 (15.0%)
Bacterial superinfection suspected*	20 (71.4%)	12 (30.0%)	<0.001
Follow-up 3 years
Hospital admission	5 (17.9%)	11 (27.5%)	0.962
Additional episodes of bronchiolitis*	7 (25%)	37 (92.5%)	<0.001

Fisher’s exact test is used to assess the association between the different variables. RSV-A, RSV admission; RSV-H, RSV hospitalization.

*Statistically significant variables.