Table 1 Patients’ characteristics

Location

Stomach

3018 (58.7 %)

Small intestine

1603 (31.2 %)

Other:

517 (10.1 %)

• Esophageal

29 (0.6 %)

• Colon

139 (2.7 %)

• Rectum

172 (3.3 %)

• Appendix

3 (0.1 %)

• Peritoneum

174 (3.4 %)

Size categories

<5 cm

1280 (24.9 %)

5 cm–9.9 cm

1678 (32.7 %)

10 cm+

1471 (28.6 %)

Unknown

709 (13.8 %)

Size (cm)

Median [IQR]

7.0 cm [4.5 to 11.8 cm]

Range

0.2–70 cm

N stage

N−

4071 (79.2 %)

N+

264 (5.1 %)

NX

803 (15.6 %)

Mitotic Count^a

<2 per 50 HPF

397 (7.7 %)

2–5 per 50 HPF

171 (3.3 %)

>5 per 50 HPF

159 (3.1 %)

Unknown

4411 (85.9 %)

Surgery of primary

No surgery of primary tumor

865 (16.8 %)

Surgery of primary tumor

4263 (83.0 %)

Unknown

10 (0.2 %)

Metastatic disease

M0

4211 (82.0 %)

M1:

927 (18.0 %)

 −M1, no surgery of metastasis

−763 (14.8 %)

 −M1, surgery of metastasis

−139 (2.7 %)

 −M1, surgery of metastasis

−25 (0.5 %)

 unknown

Year

1998 to 2002

1120 (21.8 %)

2003 to 2005

1195 (23.3 %)

2006 to 2008

1227 (23.9 %)

2009 to 2011

1596 (31.1 %)

Gender

Male

2709 (52.7 %)

Female

2429 (47.3 %)

Age

<50

1060 (20.6 %)

50–64

1805 (35.1 %)

65–79

1682 (32.7 %)

80+

591 (11.5 %)

Ethnicity

Caucasian

3536 (68.8 %)

African-American

920 (17.9 %)

Other/Unknown

682 (13.3 %)

Marital status

Married

3008 (58.5 %)

Single

832 (16.2 %)

Other/Unknown

1298 (25.3 %)

Cause of death

Alive

3545 (69.0 %)

Dead from cancer

1080 (21.0 %)

Dead not from cancer

513 (10.0 %)

Follow-up (months)

Median [IQR]

37.0 [14.0 to 74.0]