Table 5. Correlations among Different Scores and the Variables Studied (Spearman's Correlation).

Spearman's rho		Length of MV (hours)	LOS in ICU (days)	LOS in hospital (days)
CARE Score	Correlation coefficient	0.193	0.153	0.177
	P value	0.150	0.255	0.187
EuroScore II	Correlation coefficient	0.433	0.329	0.238
	P value	0.001	0.012	0.075
Edmonton Frail Scale	Correlation coefficient	0.278	0.105	0.148
	P value	0.036	0.438	0.272
Clinical Frailty Scale	Correlation coefficient	0.387	0.136	0.206
	P value	0.003	0.313	0.124

MV: mechanical ventilation, LOS: length of stay, ICU: intensive care unit, CARE: cardiac anesthesia risk evaluation.