Table 3. Standardized response means to assess responsiveness to longitudinal change in the Gait and Brain Study.

n	Months of follow-up	ADASp (95% CI)	ADASp + GV	ADASp + DTC	ADASp + GV + DTC (95% CI)
86	6	0.14 (-0.08, 0.34)	0.17	0.18	0.23 (0.01, 0.47)
73	12	-0.05 (-0.31, 0.17)	-0.02	0.03	0.06 (-0.18, 0.31)
55	24	-0.24 (-0.49, 0.03)	-0.11	-0.07	0.01 (-0.27, 0.26)
35	36	0.23 (-0.08, 0.55)	0.34	0.11	0.18 (-0.15, 0.56)
24	48	0.60 (0.22, 1.04)	0.68	0.59	0.65 (0.31, 1.2)

ADASp = Alzheimer’s Disease Assessment Scale-Cognitive Subscale-Proxy, CI = bootstrap Confidence Interval, DTC = Dual Task Cost, GV = Gait Velocity, m = months, n = sample size, + indicates variables were combined using a pooled index approach.