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Table 1 Characteristics of children enrolled in the study

From: Prediction and treatment of asthma in preschool children at risk: study design and baseline data of a prospective cohort study in general practice (ARCADE)

  Enrolled in the study (%)
(n = 771)
Not enrolled in the study (%)
(n = 1167)
Sex   
   Male 432 (56.0) 630 (54.0)
   Female 339 (44.0) 538 (46.1)
Age at onset   
   1 267 (34.6) 349 (29.9)
   2 220 (28.5) 343 (29.4)
   3 127 (16.5) 227 (19.5)
   4 121 (15.7) 203 (17.4)
   5 36 (4.7) 45 (3.9)
Symptoms at onset   
   One respiratory symptom 518 (67.2) 897 (76.9)
   Cough (2×) 420 (54.5) 763 (65.4)
   Wheeze 57 (7.4) 83 (7.1)
   Shortness of breath 41 (5.3) 51 (4.4)
   Two respiratory symptoms 195 (25.3) 221 (18.9)
   Wheeze and cough 121 (15.7) 150 (12.9)
   Shortness of breath and cough 55 (7.1) 55 (4.7)
   Shortness of breath and wheeze 19 (2.5) 16 (1.4)
   Three respiratory symptoms 58 (7.5) 49 (4.2)
   Shortness of breath, wheeze and cough 58 (7.5) 49 (4.2)
  1. Numbers are n (percentages in parentheses)