. Author manuscript; available in PMC: 2023 Jan 1.

Published in final edited form as: Am J Phys Med Rehabil. 2022 Jan 1;101(1):32–39. doi: 10.1097/PHM.0000000000001736

Table 4.

Regression results for mobility outcome measures

	PEQ-MS		TUG (sec)

	B	p-value	B	p-value
Intercept	36.26	0.00	5.63	0.02
Age	−0.14	0.03	0.23	0.00
Sex	3.15	0.14	−0.63	0.57
Level	2.04	0.31	−6.78	0.00
Etiology	−0.15	0.95	−0.12	0.91
TSAmp	0.22	0.00	−0.17	0.00
LevelxTSAmp			0.14	0.03
R²	0.175^*		0.432^*
R² Change
Block I	0.060^*		0.246^*
Block II	0.009		0.102^*
Block III	0.106^*		0.053^*
Block IV			0.031^*


	10MWT (m/sec)		6MWT (m)

	B	p-value	B	p-value

Intercept	1.55	0.00	490.07	0.00
Age	-0.01	0.00	-4.70	0.00
Sex	0.19	0.03	9.79	0.72
Level	0.19	0.01	74.13	0.00
Etiology	-0.04	0.61	-7.14	0.79
TSAmp	0.02	0.00	8.78	0.00
TSAmp²	-0.000252	0.04	-0.113	0.03
R²	0.413^*		0.474^*
R² Change
Block I	0.261^*		0.294^*
Block II	0.031		0.048
Block III	0.096^*		0.099^*
Block IV	0.025^*		0.033^*

R² refers to the total variance explained by the model.

R² change illustrates the variance explained by each block.

Block I: Age & Sex; Block II: Amputation level; Block III: TSAmp; Block IV (TUG): An interaction term, LevelxTSAmp, was used for the TUG; Block IV (6MWT & 10MWT): A squared term, TSAmp², was used to examine the curvilinear relationship between TSAmp and 10MWT & 6MWT.

B = Unstandardized beta coefficient

Sex: 0 = female; 1 = male; Level: 0 = transfemoral amputation; 1 = transtibial amputation

p < .05