Skip to main content

Table 9 Regression equation using FEV1 as dependent variable and respectively FEV0.75 and FEV0.5 as predictive

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

Parameter

β

CI 95%

a

CI 95%

R2

FEV0.75

1.06

(+1.04; +1.08)

-0.01

(-0.02; +0.02)

0.950

FEV0.5

1.17

(+1.13; +1.21)

0.04

(+0.01; +0.08)

0.870

  1. R2 = determination coefficient (proportion of explained variance);
  2. a = intercept or constant and β = regression coefficient;
  3. FEV0.75 = forced expiratory volume in 3/4 of a second;
  4. FEV0.5 = forced expiratory volume in half a second.