Table 2. Correlations of joint motion metrics with demographics and mobility metrics.

Variable	Correlation with hip ROM (r, p)	Correlation with knee ROM (r, p)
Knee ROM	0.67 (< .0001)	-
Demographics
Age at gait testing	-0.55 (< .0001)	-0.40 (0.0045)
Female	-0.05 (0.74)	0.23 (0.11)
Education	0.25 (0.081)	0.12 (0.39)
Mobility measures (from wearable sensor on lower back)
Gait speed	0.39 (0.013)	0.38 (0.016)
Gait cadence	-0.14 (0.39)	-0.16 (0.32)
Gait step variability	0.15 (0.35)	-0.10 (0.56)
Gait stride regularity	0.34 (0.017)	-0.02 (0.88)
Transition 1 duration	0.45 (0.0012)	0.51 (0.0002)
Transition 1 range	0.33 (0.021)	0.32 (0.026)
Transition 1 median	0.35 (0.014)	0.39 (0.0057)
Transition 2 jerk	0.31 (0.031)	0.29 (0.044)
Transition 2 range	0.00 (1.0)	0.06 (0.71)
Turn yaw	0.58 (< .0001)	0.38 (0.0074)
Turn frequency	-0.011 (0.95)	-0.10 (0.53)
Standing with eyes closed sway	-0.19 (0.19)	-0.30 (0.042)

Correlation coefficients in boldface had p<0.05.