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

BMC Pulmonary Medicine

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

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

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

ISSN: 1471-2466