Table 1

Anthropometric and lung function characteristics among children in the 8-year and 16-year examination in the BAMSE cohort (n=2889)

8 years16 years
Age, year12168.30.513318.60.5132316.70.4124116.70.4
BMI status‡
 Normal weight121391475.4122696879.01321104379.0124192774.7
FEV1, ml9201732.1256.69121820.5279.911213480.5445.69334491.4650.2
FEV1, z-score9190.470.949120.360.931119−0.040.91933−0.040.97
FVC, ml9201987.7294.19122144.5339.711214033.2522.89335380.4777.1
FVC, z-score9200.620.909120.560.9111190.150.899330.150.96
FEV1/FVC, %92087.35.391285.25.9112186.56.193383.86.6
R5–20 (Pa·L−1·s)126020.055.0119115.045.0
AX0.5 (Pa·L−1)0.5126016.45.8119012.65.0
FENO (ppb)104414.010.1101517.513.8
Blood eosinophils (109 cells/L)12250.10.111680.20.1
Blood neutrophils (109 cells/L)12253.51.611683.01.4
Current wheeze¶14101258.9136216712.3136221615.9126712710.0
Breathing difficulties during exercise¶, **1413644.51273987.2139240929.4129827221.0
Doctor’s diagnosis of asthma††139414610.5134919614.5139721115.1133725018.7
Asthma medication¶, ‡‡1415835.913671279.313911138.113091007.6
  • *Number with available data.

  • †Number of exposed/cases.

  • ‡Cole TJ, Lobstein T. Extended International (IOTF) body mass index cut-offs for thinness, overweight and obesity. Paediatric Obesity 7; 284–94.

  • §At 8 years, 11 girls (0.9%) and 5 boys (0.4%) fulfilled the definition of obesity class II (corresponds to BMI 35 kg/m2 at 18 years. At 16 years, 7 girls (0.5%) and 5 boys (0.4%) fulfilled this definition.

  • ¶Answered by the parent at 8 years and by the adolescent at 16 years.

  • **Doctor’s diagnosis up to 8 and 16 years, respectively.

  • ††Defined as wheezing or raspy breathing at 8 years and as wheezy or raspy breathing, difficulty breathing or troublesome cough at 16 years.

  • ‡‡Inhaled steroids occasionally or regularly (as steroids only or as a combination of inhaled steroids and long-acting beta-agonist).

  • AX0.5, area under the reactance curve; BMI, body mass index; R, frequency dependence of resistance.