Table 2.

Correlations between functional status and clinical variables

Variable	FSS total score
	Correlation coefficient*	p value
Age	-0.483	< 0.001
RACHS-1	0.437	0.001
ECC duration	0.359	0.018
Postoperative length of ICU stay	0.648	< 0.001
Postoperative IMV duration	0.683	< 0.001

FSS - Functional Status Scale; RACHS-1 - Risk Adjustment for Congenital Heart Surgery-1; ECC - extracorporeal circulation; ICU - intensive care unit; IMV - invasive mechanical ventilation.

^*Spearman.