Table 2.

Multivariable linear regression model^* relating 6MW distance (meter) to demographics, comorbid conditions, dialysis status and mid-thigh muscle area

	β & 95% CI	P value
Each SD$ increase in age	−41.7 (−70.5, −12.9)	0.005
Male	−29.1 (−69.9, 11.6)	0.16
White race	−28.4 (−71.1, 14.2)	0.19
Each SD# increase in body mass index	−36.7 (−53.9, −19.6)	<0.001
Smoking	−1.8 (−45.2, 41.6)	0.94
Alcohol use	4.1 (−26.9, 35.1)	0.79
Coronary artery disease	−24.0 (−68.5, 20.5)	0.29
Congestive heart failure	−39.1 (−90.5, 12.3)	0.14
Peripheral vascular disease	−29.0 (−87.5, 29.6)	0.33
Cerebrovascular disease	−20.0 (−57.5, 17.5)	0.30
Diabetes	−20.9 (−55.9, 14.1)	0.24
Lung disease	12.6 (−30.5, 55.7)	0.57
MHD vs non-HD status	−117 (−177, −56)	<0.001
Each SD^ increase in mid-thigh muscle area	44.6 (22.7, 66.5)	<0.001

^*All variables are in the same model. Also adjusted for age ≥ 65 years as a dichotomous variable as the entire non-HD population was 65 years of age or older.

^$Each SD of age was 17.7 years

^#Each SD of BMI was 6.0 kg/m²

^{^}Each of mid-thigh muscle area was 24.4 cm²