Table 2.

Mixed effects models of global cognition: associations of gait-related deformation PC scores with cognitive level and change, modeled separately and jointly.

	Association with cognitive level				Association with cognitive change
	Separate		Joint		Separate		Joint
PC score	b (95% CI)	p	b (95% CI)	p	b (95% CI)	p	b (95% CI)	p
1	0.172 (0.106, 0.239)	<0.001	0.114 (0.037, 0.192)	0.004	0.057 (0.039, 0.075)	<0.001	0.053 (0.032, 0.073)	<0.001
2	0.137 (0.069, 0.205)	<0.001	0.049 (−0.042, 0.14)	0.29	0.026 (0.006, 0.044)	0.008	0.005 (−0.018, 0.029)	0.66
3	0.113 (0.058, 0.168)	<0.001	0.077 (0.021, 0.134)	<0.01	0.030 (0.015, 0.045)	<0.001	0.019 (0.004, 0.034)	0.02
4	0.104 (0.046, 0.162)	<0.001	0.021 (−0.053, 0.094)	0.58	0.013 (−0.003, 0.029)	0.12	−0.011 (−0.031, 0.008)	0.26

All models were adjusted for age, sex, race, education, BMI, and their interactions with time.