Quantifying prosthetic gait deviation using simple outcome measures

Table 2 Correlations with the gait deviation index, Spearman’s rank correlation coefficient displayed

Parameter	Correlation coefficient, ρ
Participant characteristics
Age	-0.13
BMI	-0.27
Age at amputation	-0.16
Time since amputation	0.14
Performance-based outcomes
nSLpro	0.73b
nSLint	0.83b
nSLave	0.78b
nSSWS	0.7b
TUGT	-0.60
6MWD	0.74b
Self-report measures
Ambulation	0.44
Appearance	0.22
Frustration	-0.14
Perceived response	0.02
Residual limb health	-0.22
Social burden	0.37
Sounds	-0.01
Utility	0.33
Well-being	0.20

^bP ≤ 0.001, indicates significant relationships. BMI: Body mass index measured with prosthesis on; nSL: Leg-length normalised average step length; nSSWS: Leg-length normalised self selected walking speed; TUGT: Timed-up-and-go test; 6MWD: Six-minute walk distance.