World Journal of Surgical Oncology

Table 2 Baseline clinicopathologic characteristics

From: AJCC 7th edition staging classification is more applicable than AJCC 8th edition staging classification for invasive IPMN

Parameter	SEER series (N = 1216)
Parameter	No.	%
Age, years
< 70	712	58.6
≥ 70	504	41.4
Sex
Male	619	50.9
Female	597	49.1
Race
White	1014	83.4
Black	95	7.8
Others	107	8.8
Location
Head	646	53.1
Others	570	46.9
Size (cm)^a
< 3 cm	313	36.9
≥ 3 cm	535	63.1
Grade^b
Low, intermediate	635	74.9
High	213	25.1
AJCC 7th edition
IA	124	10.2
IB	133	10.9
IIA	190	15.6
IIB	314	25.8
III	45	3.7
IV	410	33.7
AJCC 8th edition
IA	155	12.7
IB	144	11.8
IIA	148	12.2
IIB	207	17.0
III	152	12.5
IV	410	33.7

SEER Surveillance, Epidemiology, and End Results program, AJCC American Joint Committee on Cancer
^a848 patients in the SEER database had data of size
^b848 patients in the SEER database had grade information

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ISSN: 1477-7819

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