Table 3.

Correlation of dynamometric parameters with stage of disease, values of multivariable prediction indexes, and results of 6MWT

	GOLD	CCA	BODE	UBODE	ADO	6MWT
Max grip (total)
R	−0.357	−0.235	−0.435	−0.503	−0.397	0.565
P	0.006	0.075	0.001	<0.001	0.002	<0.001
Max grip (male)
R	−0.237	−0.137	−0.361	−0.447	−0.427	0.494
P	0.126	0.381	0.017	0.003	0.004	0.001
AUC (total)
R	−0.410	−0.434	−0.440	−0.440	−0.271	0.331
P	0.001	0.001	0.001	0.001	0.036	0.011
AUC (male)
R	−0.464	−0.414	−0.522	−0.509	−0.458	0.382
P	0.002	0.006	[red]<0.001	<0.001	0.002	0.011
6MWT (total)
R	−0.398	−0.314	(−0.486)	(−0.585)	−0.412	–
P	0.002	0.017	(<0.001)	(<0.001)	0.001	–
6MWT (male)
R	−0.417	−0.293	(−0.457)	(−0.547)	−0.373	–
P	0.005	0.057	(0.002)	(<0.001)	0.014	–

Notes: Values marked red are the highest association for each parameter (column), and bolded values reached statistical significance (P≤0.05). Values in parentheses are included for illustrative purposes only (for better orientation), as 6MWT and BODE or _UBODE are not independent variables.

Abbreviations: 6MWT, 6-minute walk test; ADO, value of ADO index; AUC, area under the force/time curve; BODE, value of BODE index; CCA, combined COPD assessment; GOLD, classification of the Global Initiative for Chronic Obstructive Lung Disease according to post-bronchodilator airflow limitation; Max grip, maximum hand grip strength of dominant arm; P, probability values of correlation test; r, spearman correlation coefficient; _UBODE, value of updated BODE index.