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Table 1 Baseline characteristics

From: Associations between asthma, overweight and physical activity in children: a cross-sectional study

  Total group(n = 122) HC(n = 33) A(n = 29) O(n = 30) AO(n = 30)
Baseline variables
 Age in years, median (IQR)* 10.8 (2.2) 10.3 (2.1) 10.1 (2.5) 11.2 (1.9) 11.9 (2.1)
 Sex boys/girls, %* 52/48 36/64 69/31 40/60 63/37
 Measurement during summer season, % 22 27 24 10 27
PA variables
 Step count, mean (SD) 9535 (3300) 9304 (3063) 11,150 (4186) 8383 (2906) 9302 (2287)
 Meeting at least 12,000 steps/day, % 19 21 36 11 10
 Equally, or more active as reference population [30], % 36 28 48 25 42
Anthropometric variables
 BMI in kg/m2, median (IQR)* 18.8 (7.0) 16.5 (3.0) 16.1 (1.5) 22.9 (1.8) 23.6 (5.5)
 BMI-SDS, median (IQR)* 0.93 (2.28) −0.11 (1.31) −0.21 (0.90) 1.94 (0.52) 2.20 (0.76)
 Hip circumference in cm, mean (SD)* 78.1 (11.7) 70.0 (6.7) 68.3 (6.4) 86.5 (7.4) 88.6 (8.3)
 Waist circumference in cm, median (IQR)* 69.5 (19.9) 59.5 (12.4) 60.8 (8.9) 78.5 (9.0) 85 (20.4)
Asthma-related variables
 FEV1 %predicted, mean (SD)* 96 (16) 103 (14) 93 (10) 102 (12) 85 (20)
 Airway reversibility, %* 22 0 31 10 50
 Uncontrolled asthma, % 10 n.a. 8 n.a. 14
 Asthma medication use, %* 33 0 69 0 67
 SABA use, % (% of those children using more than 1 dose equivalent)* 25 (42) 0 (0) 59 (35) 0 (0) 47 (50)
 ICS use, % (% of those children using more than 1 dose equivalent)* 23 (32) 0 (0) 52 (21) 0 (0) 43 (46)
 FeNO in ppb, median (IQR)* 13.0 (12.6) 12.9 (7.4) 19.0 (27.4) 10.6 (5.0) 20.9 (18.5)
  1. Abbreviations: BMI body mass index, BMI-SDS body mass index-standard deviation score, FeNO fraction of exhaled nitric oxide, FEV 1 forced expiratory volume in 1 s, ICS inhaled corticosteroids, IQR interquartile range, n.a. not applicable, SABA short acting beta2-agonists, SD standard deviation
  2. *Significant differences between groups with p < 0.05, measured by ANOVA