Table 4.

The results from general linear mixed models of cognitive impairment and the covariates on BI.

Variables	BI
	Model I				Model II				Model III
	Estimate	95% CI		p	Estimate	95% CI		p	Estimate	95% CI		p
		Lower	Upper			Lower	Upper			Lower	Upper
Intercept	85.2695	77.6462	92.8927	<0.0001	94.5132	85.8905	103.14	<0.0001	99.9090	90.7451	109.07	<0.0001
Time	3.1211	2.4040	3.8381	<0.0001	1.5323	0.5907	2.4739	0.0018	1.5125	0.5844	2.4407	0.0018
Cognitive impairment	−9.9874	−16.7709	−3.2039	0.0042	−9.2206	−16.8047	−1.6365	0.0176	−8.1067	−15.0944	−1.1190	0.0233
NIHSS (at admission)					−1.9630	−3.3060	−0.6200	0.0045	−1.6476	−2.9887	−0.3066	0.0164
NIHSS (admission) * time					0.3397	0.1400	0.5394	0.0010	0.2741	0.07145	0.4768	0.0084
Receiving rehabilitation					−24.1535	−36.7958	−11.5112	0.0002	−21.3089	−34.2312	−8.3866	0.0014
Receiving rehabilitation * time					2.8582	0.9182	4.7982	0.0042	2.5883	0.5979	4.5787	0.0112
Premorbid disability									−7.0704	−13.0672	−1.0736	0.0212
Hypertension									−5.8778	−12.0358	0.2802	0.0612
Pain (four time points)									−2.9591	−4.6123	−1.3060	0.0006
Pain * time									0.3858	−0.2206	0.9922	0.2104

For the BI, (1) model I was a basic model adjusted for time and cognitive impairment; (2) model I plus NIHSS, receiving rehabilitation 1 month after onset (model II); and (3) model II plus premorbid disability, hypertension, and pain (model III).

BI, Barthel Index; NIHSS, National Institutes of Health Stroke Scale.