Table 2. Correlations between baseline functional capacity and postoperative course parameters.

	6MWT	Alb	VT	MH	CRP	PCs	LOS	Age	Sex
Skeletal muscle index (SMI)	0.195*	0.136	0.012	−0.011	0.372*	0.079	−0.023	−0.204*	0.640†
6-minute walk test (6MWT)		0.484*	0.163	0.188*	−0.197*	−0.158	−0.242†	−0.469*	0.103
Serum-albumin (Alb)			0.117	0.039	−0.220*	−0.076	−0.300†	−0.374*	0.002
Vitality (VT)				0.652*	−0.076	−0.011	−0.166	−0.015	0.091
Mental health (MH)					−0.077	−0.001	−0.167	0.045	0.079
C-reactive protein on postoperative day 3 (CRP)						0.300†	0.267†	0.171	0.291†
Cases corresponding to Clavien–Dindoclassification grade II or higher (PCs)							0.466†	0.129	0.119
Length of hospital stay (LOS)								0.109	0.017
Age									0.076

* Significant difference for Pearson’s product-moment correlation coefficient.

† Significant difference for Spearman’s rank correlation coefficient.