TABLE 1.

Risk factors associated with higher grade of postoperative tricuspid regurgitation

Factor	Estimate ± SE	P value	Reliability (%)*
Overall
Older age†	1.1 ± 0.23	<.0001	77
Women	1.02 ± 0.26	.0001	52
Higher grade of preoperative TR‡	−1.7 ± 0.53	.001	71
Early phase
Higher preoperative MPI§	4.1 ± 1.8	.02	61
Absence of TV procedure	−4.2 ± 1.1	.0001
Late phase
Lower LVejection fraction‖	3.9 ± 1.3	.003	61
Higher MR grade	1.4 ± 0.56	.02	78
Absence of TV procedure	−2.3 ± 0.58	<.0001

LV, Left ventricular; MPI, myocardial performance index; MR, mitral regurgitation; SE, standard error; TR, tricuspid regurgitation; TV, tricuspid valve.

^*Percentage of times variable appeared in 500 bootstrap models.

^†(Age/50)², squared transformation.

^‡(1/[TR grade+1]), inverse transformation.

^§MPI², squared transformation.

^‖(50/ejection fraction), inverse transformation.