Table 4– Difference between spirometric indices predicted from measured height, and from height predicted from arm span and age
Difference %Concordant %
FEV10.0±4.695.8
FVC0.0±4.996.8
FEV1/FVC0.0±0.2999.6
Restriction99.0

  • Data are presented as mean±sd unless otherwise stated. Concordant findings are those where an index was below the fifth percentile or in the normal range using both measured and predicted height. Data relate to 1503 French patients aged 20–70 years. FEV1: forced expiratory volume in 1 s; FVC: forced vital capacity.