Table 2.

Six- and 12-Month Changes in Each Component of the Short Physical Performance Battery Intervention Among Peripheral Artery Disease Participants Enrolled in the Group Oriented Arterial Leg Study

Outcome Measures—6-Month Comparisons	N	Baseline Mean (SD)	6-Month Mean (SD)	Within-Group Change (95% CI)	With-Control Comparison (95% CI)	P Value
Walking velocity score (0 to 4 scale, 4=best)
Control group	87	3.61 (0.56)	3.66 (0.55)	0.05 (−0.06 to 0.15)	Reference group	0.5858
Intervention group	81	3.67 (0.61)	3.75 (0.56)	0.09 (−0.02 to 0.19)	0.04 (−0.11 to 0.19)
Standing balance score (0 to 4 scale, 4=best)
Control group	87	3.09 (1.00)	3.07 (1.09)	−0.02 (−0.26 to 0.21)	Reference group	0.1596
Intervention group	80	3.01 (1.26)	3.24 (1.02)	0.23 (−0.04 to 0.49)	0.25 (−0.10 to 0.59)
Time for 5 chair rises (0 to 4 scale, 4=best)
Control group	83	3.19 (1.16)	3.19 (1.04)	0 (−0.22 to 0.22)	Reference group	0.3546
Intervention group	77	3.14 (1.16)	3.29 (1.10)	0.14 (−0.07 to 0.36)	0.14 (−0.16 to 0.45)

Outcome Measures—12- Month Comparisons	N	Baseline Mean (SD)	12-Month Mean (SD)	Within-Group Change (95% CI)	With-Control Comparison (95% CI)	P Value
Walking velocity score (0 to 4 scale, 4=best)
Control group	87	3.61 (0.56)	3.62 (0.60)	0.01 (−0.11 to 0.13)	Reference group	0.8799
Intervention group	81	3.67 (0.61)	3.69 (0.65)	0.02 (−0.10 to 0.15)	0.01 (−0.16 to 0.19)
Standing balance score (0 to 4 scale, 4=best)
Control group	87	3.09 (1.00)	2.97 (1.06)	−0.13 (−0.38 to 0.13)	Reference group	0.0263
Intervention group	80	3.01 (1.26)	3.28 (1.01)	0.26 (0.03 to 0.49)	0.39 (0.05 to 0.73)
Time for 5 chair rises (0 to 4 scale, 4=best)
Control group	83	3.19 (1.16)	3.19 (1.18)	0 (−0.23 to 0.23)	Reference group	0.2656
Intervention group	77	3.14 (1.16)	3.31 (1.14)	0.17 (−0.02 to 0.36)	0.17 (−0.13 to 0.47)