Table 7.

Correlation of Physical Performance with Anxiety and Depression Scales in Maintenance Hemodialysis Patients Unadjusted and Adjusted for Relevant Covariates

	Unadjusted		Age, gender adjusted		Fully-adjusted*
	R	P-value	R	P-value	R	P-value
Beck Anxiety Inventory Score
6-minute walk distance (meters)	−0.278	0.018	−0.294	0.014	−0.268	0.028
Sit-to-stand test (no. cycles in 30 seconds)	−0.260	0.027	−0.265	0.027	−0.258	0.035
Stair climbing test (seconds per 22 stairs)	0.109	0.363	0.095	0.436	0.052	0.677
Beck Depression Inventory Score
6-minute walk distance (meters)	−0.197	0.098	−0.262	0.028	−0.192	0.120
Sit-to-stand test (no. cycles in 30 seconds)	−0.100	0.404	−0.117	0.336	−0.105	0.399
Stair climbing test (seconds per 22 stairs)	0.103	0.390	0.151	0.212	0.092	0.460
HADS-Anxiety Score
6-minute walk distance (meters)	−0.136	0.254	−0.270	0.024	−0.214	0.082
Sit-to-stand test (no. cycles in 30 seconds)	−0.112	0.349	−0.190	0.116	−0.181	0.144
Stair climbing test (seconds per 22 stairs)	0.042	0.725	0.165	0.173	0.108	0.385
HADS-Depression Score
6-minute walk distance (meters)	−0.096	0.425	−0.148	0.222	−0.105	0.400
Sit-to-stand test (no. cycles in 30 seconds)	−0.194	0.103	−0.225	0.061	−0.215	0.081
Stair climbing test (seconds per 22 stairs)	0.007	0.952	0.042	0.730	−0.001	0.993

^*Adjusted for age, gender, presence of diabetes, blood hemoglobin and dialysis vintage.