Table 3.

ANCOVA analysis of CIRS total scores (log CIRS tot) by covariable [selected forward with the best Akaike information criterion (AIC)].

	log CIRS-G
	Beta (SE)	[95% CI]	p value
Intercept	2.1 (0.2)	[1.3; 2.7]	<0.0001
Age	0.009 (0.003)	[0.003; 0.01]	0.001
SS daily life	–	–	–
SS social skills	–	–	–
ADL	−0.1 (0.02)	[−0.1; −0.04]	<0.0001
Polypharmacy (1/0)	0.4 (0.08)	[0.1; 0.5]	<0.0001
DBI	–	–	–
R² total	0.55

Linear regressions were used when the CIRS-G score was normalized by logarithmic transformation because of its distribution. Dashes indicate that the variable was not entered into the model.

SE, standard error; CI, confidence interval; ADL, activities of daily living; DBI, Drug Burden Index; SS, sub-score at VABS-II (Vineland Adaptive Behavior Scale II).