Table 3.

Multivariate linear regression analyses with Wmax, 6 MWD, SGRQ total score, and SGRQ activity subscore as dependant variable in GOLD 2

Dependant variable	Wmax*		6MWD**		SGRQ total score***		SGRQ activity****
	Coefficient (SE)	p-value	Coefficient (SE)	p-value	Coefficient (SE)	p-value	Coefficient (SE)	p-value
Constant	−107	0.017	299 (166)	0.075	120 (25)	<0.001	143 (19)	<0.001
Height (m)	111 (28)	<0.001	349 (102)	0.001	−36 (16)	<0.032
QF (Nm)	0.2 (0.05)	<0.001	0.4 (0.19)	0.037
DLco(mmol.min −1.kPa−1)	4 (1.3)	0.003	12.3 (4.2)	0.004
Age (yr)	−0.7 (0.2)	0.004	−3.4 (0.7)	<0.001			−0.39 (0.18)	<0.05
FFM (Kg)			−5.1 (1.2)	<0.001
gender			49.8 (18)	0.007
6MWD (m)					−0.043 (0.018)	<0.017	−0.1 (0.02)	<0.001
HGF (pounds)							−0.19 (0.07)	<0.01
F-statistic	60.7		17.8		9.9		14.8
adjusted R2	0.57		0.48		0.14		0.28

^*Notes: Variables removed from the model FEV₁, Pi max, HGF, FFM, gender and depletion of FFM;

^**Variables removed from the model FEV₁, Pi max, HGF, and depletion of FFM;

^***Variables removed from the model height, gender, QF, DLco, FEV₁, Pi max, HGF, Wmax and depletion of FFM;

^****Variables removed from the model height, gender, QF, DLco, FEV₁, Pi max, Wmax and depletion of FFM.

Abbreviations: