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Table 8 Odds ratios (OR) of lung function parameters lower than 5th percentile of reference value versus symptoms using "list-wise deletion"* of missing values and a single parameter

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

Parameter

OR

CI 95%

p value

FVC

4.05

1.41–11.61

0.009

FEV1

4.17

1.85–9.39

0.001

FEV075

2.93

1.48–5.82

0.002

FEV0.5

3.10

1.66–5.76

0.000

FEV1/FVC

2.10

0.84–5.20

0.111

FEV0.5/FVC

3.22

1.45–7.18

0.004

FEV0.75/FVC

2.71

1.22–6.02

0.015

MEF75

10.55

4.42–25.19

0.000

MEF50

3.63

1.78–7.38

0.000

MEF25

2.70

1.14–6.40

0.024

  1. * The single case is eliminated for the variable in which a missing value is present
  2. FVC = forced vital capacity;
  3. FEV1 = forced expiratory volume in one second;
  4. FEV0.75 = forced expiratory volume in 3/4 of a second;
  5. FEV0.5 = forced expiratory volume in half a second;
  6. MEF75 = instantaneous expiratory flow when 25% of FVC has to be expired
  7. MEF50 = instantaneous expiratory flow when 50% of FVC has to be expired
  8. MEF25 = instantaneous expiratory flow when 75% of FVC has to be expired
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Respiratory Research

ISSN: 1465-993X

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