Table 2.

Linear mixed model for cardiac index

	Model 1					Model 2
	Value	SE	DF	t-value	p-value	Value	SE	DF	t-value	p-value
(Intercept)	2.540	0.214	91	11.866	0.000	2.420	0.232	84	10.423	0.000
Sensor2	− 0.146	0.086	91	− 1.694	0.094	0.094	0.198	84	0.474	0.637
t6	0.238	0.179	91	1.332	0.186	0.367	0.229	84	1.601	0.113
t12	0.398	0.181	91	2.198	0.030	0.622	0.229	84	2.716	0.008
t24	0.171	0.173	91	0.991	0.324	0.280	0.222	84	1.260	0.211
t48	0.115	0.186	91	0.622	0.535	0.182	0.237	84	0.768	0.445
t72	0.358	0.205	91	1.749	0.084	0.612	0.260	84	2.352	0.021
t96	0.457	0.317	91	1.443	0.152	0.672	0.398	84	1.689	0.095
t120	0.171	0.429	91	0.398	0.692	0.156	0.540	84	0.289	0.774
Sensor2:t6						− 0.257	0.288	84	− 0.893	0.375
Sensor2:t12						− 0.468	0.294	84	− 1.591	0.115
Sensor2:t24						− 0.217	0.281	84	− 0.773	0.442
Sensor2:t48						− 0.133	0.298	84	− 0.446	0.657
Sensor2:t72						− 0.506	0.324	84	− 1.561	0.122
Sensor2:t96						− 0.434	0.486	84	− 0.893	0.374
Sensor2:t120						0.026	0.658	84	0.040	0.969

SE standard error, DF degrees of freedom. Sensor 2 corresponds to ProAQT® sensor

Model 1 (Additive Model): AIC (Akaike information criterion) = 207.53, BIC (Bayesian information criterion) = 241.4, ICC (intraclass correlation coefficient) = 0.81. Model 2 (Interactive Model): AIC = 220.56, BIC = 271.22, ICC = 0.78