Table 3. Distribution of ABO blood types in patients with pancreatic neuroendocrine tumors and the two Han Chinese populations from shanghai.

	F-PNET, n	Population control 1, n	P	Population control 2, n	P
O	87	12646	0.461	25100	0.253
A	70	12381		25474
B	67	11501		22531
AB	20	4002		7783
(A vs.) Non-A	174	28149	0.530	55788	0.371
(B vs.) Non-B	177	29029	0.751	55414	0.619
(O vs.) Non-O	157	27884	0.134	58357	0.068

	NF-PNET, n	Population control 1, n	P	Population control 2, n	P
O	46	12646	0.977	25100	0.983
A	44	12381		25474
B	38	11501		22531
AB	14	4002		7783
(A vs.) Non-A	98	28149	0.910	55788	0.926
(B vs.) Non-B	104	29029	0.328	55414	0.537
(O vs.) Non-O	96	27884	0.759	58357	0.547

Note, Pearson's χ² test was used for all.