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Table 4 Stepwise linear regression model of Six minute walking distance in meters

From: Characteristics and determinants of endurance cycle ergometry and six-minute walk distance in patients with COPD

r2: 34.0%

Variable

Coefficient

Standard error

t value

p value

Age, yrs

-3.97

0.29

-13.98

<0.001

BMI, kg/m2

-7.48

0.75

-9.87

<0.001

FFMI, kg/m2

8.77

1.59

5.52

<0.001

FEV1, %

1.28

0.29

4.44

<0.001

FEV1/FVC, r

-1.60

0.42

-3.89

<0.001

GOLD stages

-15.04

5.04

-3.02

0.003

FRC, %

-0.43

0.11

-3.85

<0.001

DLCO, %

1.11

0.16

6.89

<0.001

Leg fatigue before test, index

-15.80

1.64

-9.57

<0.001

  1. Multiple linear regression model for parameters predictive of six minute walk distance.
  2. Using isolated linear regression determination a stepwise multiple linear regression model was established with an r2 of 34.0%.