Table 3.

Coefficients of nonzero factors in Ridge and Adaptive LASSO logistic regression.

Characteristic	Method
	Ridge regression		Adaptive LASSO regression
	Coefficient	SE	Coefficient	SE	RR
PNF	8.51	1.98	0.56	0.10	1.75
Renal failure after transplantation	13.59	1.86	0.35	0.07	1.42
Lung complication after transplantation	6.42	1.85	0.23	0.10	1.26
PTLD	3.70	1.74	0.21	0.22	1.23
Vascular complication after transplantation	6.49	1.80	0.17	0.10	1.19
Exploration after transplantation	9.93	1.92	0.14	0.06	1.15
Type of transplantation
Whole	Baseline	—	Baseline	—	—
Split	4.06	1.89	0.00	0.06	1.00
Partial	2.96	1.26	0.03	0.15	1.03
Duration of operation (hour)	6.31	1.97	0.02	0.01	1.02
Donor sex
Male	Baseline	—	Baseline	—	—
Female	4.25	2.03	0.02	0.02	1.02
Donor age	4.45	1.93	0.00	0.01	1.00
Diabetes after transplantation	−4.02	1.89	0.00	0.03	1.00