Age in combination with gender is a valuable parameter in differential diagnosis of solid pseudopapillary tumors and pancreatic neuroendocrine neoplasm

Table 2 Univariate and multivariate logistic regression

Variable	Univariate Logistic Regression			Multivariate Logistic Regression
Variable	OR	β	P-value	OR	β	P-value
Age
< 33 years	Reference			Reference
≥33 years	0.019	-3.944	< 0.001	0.012	-4.386	< 0.001
Gender
Male	Reference				Reference
Female	17.782	2.878	< 0.001	14.247	2.657	0.002
Race
White	Reference				----	----
Black	1.730	0.548	0.336		----	----
Other	1.660	0.507	0.267		----	----
Location
Head	Reference				----	----
Body/ Tail	1.348	0.299	0.494		----	----
Tumor size
< 36 mm	Reference				----	----
≥36 mm	-0.079	-0.079	0.834		----	----
T-Stage
T1-Stage	Reference				Reference	-----
T2-Stage	6.959	1.940	0.010	28.840	3.362	0.001
T3-Stage	1.887	0.635	0.453	18.830	2.935	0.010
T4-Stage	2.478	0.908	0.371	196.699	5.282	< 0.001
N-Stage
N0-Stage	Reference				Reference
N1-Stage	0.070	-2.665	0.009	0.055	-2.902	0.012
M-Stage
M0-Stage	Reference				Reference	-----
M1-Stage	0.113	-2.179	< 0.001	0.150	-1.898	0.027
AJCC-Stage
I-Stage	Reference			----	----	----
II-Stage	0.293	-1.229	0.027	----	----	----
III-Stage	<0.001	-19.203	0.999	----	----	----
IV-Stage	0.079	-2.532	< 0.001	----	----	----
Grade
Well differentiated	Reference			----	----	----
Moderately differentiated	2.240	0.806	0.238	----	----	----
Poorly differentiated	<0.001	-17.465	0.998	----	----	----
Undifferentiated	<0.001	-17.465	0.998	----	----	----

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