Table 3.

Logistic regression analysis predicting splenectomy (failure of spleen preservation)

	Univariate analysis		Multivariate analysis
	HR (95% CI)	P value	HR (95% CI)	P value
Approach
ODP	Ref
RDP	0.165 (0.117, 0.233)	< 0.001	0.239 (0.158, 0.361)	< 0.001
Age	1.014 (1.004, 1.024)	0.008	1.015 (1.001, 1.029)	0.033
Sex
Male	Ref
Female	0.696 (0.506, 0.956)	0.025	0.823 (0.537, 1.260)	0.370
BMI	0.984 (0.945, 1.024)	0.428
ALB	0.956 (0.926, 0.988)	0.007	0.990 (0.948, 1.034)	0.647
Abdominal surgery history	1.047 (0.651, 1.683)	0.850
ASA score
1	Ref
2	1.072 (0.756, 1.520)	0.695
3	2.002 (0.875, 4.579)	0.100
CA 19-9 (IU/L)
≤ 35	Ref
> 35	2.296 (1.194, 4.416)	0.013	1.696 (0.785, 3.666)	0.179
PV/SMV abutment	3.456 (0.943,12.669)	0.061
Tumor size	1.283 (1.192, 1.381)	< 0.001	1.283 (1.173, 1.404)	< 0.001
Pathology
Cystic neoplasm	Ref
Solid neoplasm (SPT and PNET)	1.312 (0.921, 1.868)	0.133	1.634 (1.043, 2.560)	0.032
IPMN	1.608 (0.957, 2.703)	0.073	1.565 (0.827, 2.962)	0.169
Inflammatory neoplasm	6.939 (3.388,14.214)	< 0.001	5.121 (2.220, 11.811)	< 0.001
Others	1.113 (0.572, 2.165)	0.752	0.884 (0.386, 2.027)	0.771
Tumor location
Tail	Ref
Body–tail junction	1.051 (0.697, 1.585)	0.813
Body and neck	1.108 (0.791, 1.551)	0.551
Operative time	1.008 (1.005, 1.011)	< 0.001	0.998 (0.994, 1.002)	0.245
Estimated blood loss	1.004 (1.003, 1.005)	< 0.001	1.003 (1.001, 1.004)	< 0.001

P values < 0.05 indicate a significant difference between the two groups are given in bold