Table 5.

Multiple linear regression models with short physical performance battery, the gait test, and the sit-to-stand test as dependent variables in patients on peritoneal dialysis (n = 49).

Dependent variable	Independent variable	Model	β	CI 95%	p	Adjusted R2
Short physical performance battery (points)	Phase angle (°)	1	0.544	0.474–1.261	<0.001	0.281
		2	0.324	0.058–0.977	0.028	0.359
		3	0.340	0.085–1.000	0.021	0.370
		4	0.325	0.008–1.028	0.047	0.356
	Overhydration (L)	1	−0.306	−0.913 to −0.042	0.032	0.075
		2	−0.208	−0.701–0.053	0.090	0.331
		3	−0.194	−0.684–0.079	0.117	0.328
		4	−0.206	−0.701–0.059	0.095	0.339
Gait test (seconds)	Phase angle (°)	1	−0.585	−1.439 to −0.607	<0.001	0.329
		2	−0.356	−1.102 to −0.142	0.012	0.417
		3	−0.369	−1.125 to −0.166	0.009	0.424
		4	−0.293	−1.038–0.014	0.056	0.430
	Overhydration (L)	1	0.289	0.015–0.974	0.044	0.064
		2	0.184	−0.089–0.716	0.124	0.365
		3	0.172	−0.114–0.701	0.154	0.359
		4	0.192	−0.063–0.717	0.098	0.418
Sit-to-stand test (seconds)	Phase angle (°)	1	−0.547	−3.226 to −1.228	<0.001	0.285
		2	−0.372	−2.712 to −0.315	0.014	0.329
		3	−0.391	−2.774 to −0.410	0.009	0.353
		4	−0.373	−2.836 to −0.199	0.025	0.339
	Overhydration (L)	1	0.335	0.231–2.429	0.019	0.093
		2	0.246	−0.007–1.965	0.052	0.296
		3	0.229	−0.084–1.901	0.072	0.300
		4	0.242	−0.019–1.945	0.054	0.319

Model 1: no adjustments; Model 2: adjusted by age; Model 3: adjusted by age and diabetes; Model 4: adjusted by age, diabetes, and sex.