Table 6.

Saturated group by time and final spline model results

Model	Every Day Problems Test for Cognitively Challenged Elders		Direct Assessment of Functional Status
	Saturated	Spline	Saturated	Spline
Between-group difference score
Control baseline (constant)	15.375	15.356	93.912	93.912
Reasoning Exercises in Assisted Living (difference score)	−2.509	−2.435	0.338	0.338
VITAMIN (difference score)	2.415	2.435	−0.948	−0.949
Within-group difference score
CONTROL, postintervention	−0.719		0.875
CONTROL, 3 month	−1.071		−0.371
CONTROL, 6 month	0.962		−1.503
Reasoning Exercises in Assisted Living, postintervention	3.103**		3.517***
Reasoning Exercises in Assisted Living, 3 months	2.728**		1.259
Reasoning Exercises in Assisted Living, 6 months	1.642		−0.980
VITAMIN, postintervention	1.536		−1.214
VITAMIN, 3 months	0.120		−0.730
VITAMIN, 6 months	0.153		−0.476
CONTROL, postintervention gain		−1.038		0.860
Reasoning Exercises in Assisted Living, postintervention gain		3.208***		3.514***
VITAMIN, postintervention gain		1.321		−1.180
CONTROL, 6 month loss		1.573		−2.384*
Reasoning Exercises in Assisted Living, 6 month loss		−1.441		−4.498***
VITAMIN, 6 month loss		−1.415		0.744
R-square	46.4%	46.4%	48.3%	48.3%
Log likelihood	−980.623	−981.827	−978.215	−978.224
Akaike information criterion	1999.246	1995.855	1994.431	1988.448
Bayesian information criterion	2071.256	2056.494	2066.440	2049.087
Variance facility	4.658	4.659
Variance subject	22.573	22.443	12.749	12.751
Within-subject residual	13.434	13.602	16.061	16.061
ICC facility	0.115	0.113
ICC subjects	0.670	0.665	0.443	0.443

Notes:

^*P<0.05

^**P<0.01

^***P<0.001.

Abbreviation: ICC, intraclass correlation coefficient.