Table 1.

Clinical and biological characteristics of the asthmatic patients.

Variables	Blomia + N1 = 103	Blomia- N2 = 55	p
Age (Years, median, IQR)*	7 [5–11]	3 [2–5]	<0.001
Sex F (n, %)	37 (36)	21 (38)	0.8
Medical history prior to follow-up
Abnormal growth (n, %)	22 (21)	8 (15)	0.3
Psychomotor delay (n, %)	4 (4)	1 (2)	0.5
Associated pathology (n, %)	101 (98)	43 (78)	0.001
Asthma control at baseline (n, %)	19 (18)	9 (16)	0.7
Ongoing of background treatment at the beginning of follow-up	33 (32)	15 (27)	0.5
Nocturnal cough (n, %)	68 (66)	32 (58)	0.3
Morning cough (n, %)	33 (32)	16 (29)	0.7
Exertion-induced asthma (n, %)	59 (57)	24 (44)	0.2
Diurnal symptoms (n, %)	10 (10)	3 (5)	0.4
Annual number of exacerbations before follow-up (median, IQR)	4 [3–7]	4 [3–6]	0.9
Annual number of hospitalizations before follow-up (median, IQR)	0 [0–1]	0 [0–1]	0.9
Follow-up outcomes
Asthma control/follow-up (n, %)			0.09
Controlled asthma	52 (50)	24 (44)
Partially controlled asthma	39 (38)	19 (35)
Uncontrolled asthma	6 (6)	4 (7)
Lost to follow-up	6 (6)	8 (15)
Final change (n, %)			0.4
Normal progression	83 (81)	43 (78)
Poor compliance	10 (10)	4 (7)
Lost to follow-up	10 (10)	8 (15)
Asthma severity (n, %)			0.8
In remission	1 (1)	3 (5)
Intermittent	19 (18)	6 (11)
Mild persistent	50 (49)	27 (49)
Moderate persistent	33 (32)	18 (33)
Severe persistent	0 (0)	1 (2)
Annual number of crises after 1 year of follow-up (median, IQR)	0 [0–1]	1 [0–1]	0.2
Main identified allergens
D. pteronyssinus (n, %)	97 (94)	8 (15)	<0.001
D. farinae (n, %)	97 (94)	6 (11)	<0.001
Cockroaches (n, %)	57 (55)	8 (15)	0.01
Aspergillus fumigatus (n, %)	14 (14)	0	0.9
Alternaria alternate (n, %)	15 (15)	0	0.8

IQR, interquartile range.

*The structural age groups used for analysis are infants (0–3 years), children (4–12 years) and adolescents (>12 years).