Table 2.

Means and Standard Deviations for ADL and IADL Difficulties by Data Collection Point

	ADL Difficulties	IADL Difficulties
Wave	M (SD)	M (SD)
Baseline	1.73 (2.29)	1.00 (1.44)
6 months	1.48 (2.01)	0.78 (1.31)
12 months	1.40 (1.94)	0.73 (1.29)
18 months	1.55 (2.06)	0.99 (1.54)
24 months	1.48 (2.11)	0.89 (1.48)
30 months	1.63 (2.31)	1.35 (1.86)
36 months	1.71 (2.36)	1.52 (1.95)

Note: ADL = activity of daily living; IADL = instrumental ADL.