TABLE 2

Distribution of age, height, weight, body mass index (BMI), forced expiratory volume in 1 s (FEV1) and forced vital capacity (FVC) for the two study populations

CharacteristicCross-sectional analyses population#Longitudinal analyses population#
TotalBoysGirlsTotalBoysGirls
Subjects n721338383915434481
Distribution at 16 years
 Age years16.3±0.216.3±0.216.3±0.216.3±0.216.3±0.216.3±0.2
 Weight kg64.2±10.168.1±10.160.7±8.864.1±10.067.8±9.960.9±8.8
 Height cm175.5±8.6181.7±6.7169.9±6.0175.3±8.5181.5±6.4170.0±6.0
 BMI kg·m−220.8±2.720.6±2.720.9±2.620.8±2.620.5±2.621.0±2.6
 FEV1 L3.92±0.704.43±0.623.48±0.443.92±0.704.43±0.623.50±0.44
 FVC L4.70±0.855.35±0.694.15±0.514.70±0.855.35±0.694.15±0.51
Distribution at 12 years
 Age years12.6±0.312.6±0.312.6±0.3
 Weight kg48.2±9.147.6±9.248.8±8.9
 Height cm160.0±7.5159.5±7.8160.5±7.2
 BMI kg·m−218.7±2.618.6±2.618.8±2.6
 FEV1 L2.71±0.422.69±0.442.72±0.41
 FVC L3.22±0.513.25±0.513.20±0.50
Distribution at 8 years
 Age years8.1±0.38.0±0.38.1±0.3
 Weight kg29.0±4.729.0±4.429.0±4.9
 Height cm133.1±5.6133.4±5.4132.9±5.7
 BMI kg·m−216.3±1.816.2±1.716.3±1.9
 FEV1 L1.79±0.241.82±0.241.76±0.23
 FVC L2.01±0.282.06±0.281.96±0.28

Data is presented as mean±sd, unless otherwise stated. #: the value of n is smaller than indicated for some variables due to missing data.