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Table 1 Personal characteristics of children with severe asthma (SA) and non-severe persistent asthma (NSPA)

From: Severe asthma features in children: a case–control online survey

  SA NSPA p
(n = 41) (n = 78)
Personal characteristics    
Age at the study, yrs 12 (6–17) 12 (6–17) 0.8
Male gender 27 (66) 47 (60) 0.7
Lifetime atopic sensitization to    
 house dust mites 31 (76) 59 (76) 1
 pets dander 21 (51) 47 (60) 0.4
 moulds 13 (32) 24 (31) 1
 pollen 28 (68) 61 (78) 0.3
 cow milk proteins/egg/peanuts 15 (37) 14 (18) 0.04
History of anaphylactic reactions 6 (15) 10 (13) 0.8
Current atopic eczema 10 (24) 11 (14) 0.2
Current food allergies 6 (15) 9 (11) 0.8
Age at onset of asthmatic symptoms, yrs 3 (0–11) 2 (0–12) 0.8
Age at physician’s diagnosis of asthma, yrs 5 (0–11) 6 (0–13) 0.06
Age at anti-asthma maintenance treatment start, yrs 6 (1–12) 7 (1–13) 0.04
Lifetime hospital admissions for asthma 33 (80) 30 (38) <0.001
Hospital admissions for asthma during the past year 12 (29) 3 (4) <0.001
Emergency-department visits for asthma during the past year 19 (46) 8 (10) <0.001
Oral steroids for asthma exacerbation in the past year 32 (78) 34 (44) <0.001
Nocturnal symptoms between exacerbations 22 (54) 26 (33) 0.049
Asthmatic symptoms triggered by    
physical activity 36 (88) 41 (53) <0.001
 allergens 24 (59) 44 (56) 0.8
 airway infections 28 (68) 41 (53) 0.1
 fog, humid or cold air, or perceivable odors 19 (46) 29 (37) 0.4
 tobacco smoke 9 (22) 10 (13) 0.2
Comorbidities    
 Current rhinoconjunctivitis 23 (56) 48 (61) 0.7
 Obesity 4 (10) 7 (9) 1
 Symptoms of chronic sinusitis 4 (10) 2 (3) 0.2
 Symptoms of gastro-esophageal reflux 6 (15) 7 (9) 0.4
Regularly playing a sport 26 (63) 51 (65) 0.8
Physically active >5 h/wk 10 (24) 21 (27) 0.8
  1. Data are presented as number of patients (%) or median values (range)