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Table 7 Mean and 5th percentile as limit of normal value in asymptomatic subjects

From: Reference values of Forced Expiratory Volumes and pulmonary flows in 3–6 year children: a cross-sectional study

Parameter

N

Mean

5thntil

FEV1/FVC

285

0.96

0.88

FEV0.75/FVC

311

0.92

0.83

FEV0.5/FVC

327

0.81

0.69

  1. FEV1/FVC = ratio of forced expiratory volume in one second and forced vital capacity;
  2. FEV0.75/FVC = ratio of forced expiratory volume in 3/4 of a second and forced vital capacity;
  3. FEV0.5/FVC = ratio of forced expiratory volume in half a second and forced vital capacity;
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Respiratory Research

ISSN: 1465-993X

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