Table 1.

Demographic and clinical characteristics of NHW, API, Hispanic and black gastric cancer Medicare cases (n = 47,994) – 1997–2010

CharacteristicaTotal (n = 47,994)NHW (n = 29,614)API (n = 6,240)Hispanic (n = 5,630)Black (n = 6,510)
Number (%) or mean ± SD
Demographic factors
Age at diagnosis74.1 ± 10.774.6 ± 10.574.5 ± 9.972.5 ± 10.872.5 ± 11.7
Male sex28,840 (60.1)18,304 (61.8)3,608 (57.8)3,336 (59.3)3,592 (55.2)
Married at diagnosis26,406 (55.0)16,827 (56.8)4,015 (64.3)3,078 (54.7)2,486 (38.2)
Lived in urban community44,784 (93.3)27,040 (91.3)6,231 (99.9)5,436 (96.6)6,077 (93.4)
Lowest-income quartile13,342 (28.6)6,165 (21.5)1,309 (21.5)2,206 (39.8)3,662 (57.6)
Place of birth
U.S.-born27,340 (56.9)19,078 (64.4)1,606 (25.7)1,911 (33.9)4,745 (72.9)
Foreign-born7,390 (15.4)2,433 (8.22)2,995 (48.0)1,812 (32.2)150 (2.3)
Unknown13,264 (27.6)8,103 (27.4)1,639 (26.3)1,907 (33.9)1,615 (24.8)
SEER region
Northeast9,139 (19.0)7,068 (23.9)292 (4.7)654 (11.6)1,125 (17.3)
South8,238 (17.2)5,370 (18.1)120 (1.9)105 (1.9)2,643 (40.6)
Midwest5,090 (10.6)3,957 (13.4)73 (1.2)83 (1.5)977 (15.0)
West25,527 (53.2)13,219 (44.6)5,755 (92.2)4,788 (85.0)1,765 (27.1)
Disease presentation
Location of tumor
Cardia12,305 (26.5)10,195 (35.6)624 (10.4)809 (14.7)677 (10.9)
Noncardia
Body & fundus6,411 (13.8)3,688 (12.9)857 (14.2)945 (17.2)921 (14.9)
Pyloric antrum9,086 (19.6)4,344 (15.2)1,895 (31.4)1,250 (22.8)1,597 (25.8)
Pylorus1,429 (3.1)680 (2.4)213 (3.5)255 (4.6)281 (4.5)
Lesser & greater curvature5,659 (12.2)2,917 (10.2)1,061 (17.6)774 (14.1)907 (14.6)
Othere11,469 (24.7)6,815 (23.8)1,377 (22.9)1,459 (26.6)1,818 (29.3)
Missingb1,635 (3.4)975 (3.3)213 (3.4)138 (2.5)309 (4.7)
Stage of tumor at diagnosis in all (cardia & noncardia) cases
Unstaged3,485 (13.2)2,203 (13.7)375 (10.8)404 (12.2)503 (13.8)
 In situ449 (1.7)295 (1.8)57 (1.6)46 (1.4)51 (1.4)
Local7,707 (29.1)4,661 (29.0)1,085 (31.2)894 (26.9)1,067 (29.2)
Regional7,488 (28.3)4,320 (26.9)1,122 (32.2)1,043 (31.4)1,003 (27.5)
Distant7,377 (27.8)4,576 (28.5)841 (24.2)931 (28.1)1,029 (28.2)
Missingb21,488 (44.8)13,559 (45.8)2,760 (44.2)2,312 (41.1)2,857 (43.9)
Stage of tumor at diagnosis in noncardiac cases
Unstaged2,657 (14.4)1,536 (15.9)325 (10.9)356 (12.9)440 (14.3)
In situ & locald5,425 (29.3)2,836 (29.4)949 (31.7)748 (27.1)892 (29.0)
Regional5,122 (27.7)2,422 (25.1)983 (32.8)857 (31.1)860 (28.0)
Distant5,280 (28.6)2,865 (29.7)738 (24.6)796 (28.9)881 (28.7)
Missingb15,570 (32.4)8,785 (29.7)2,408 (38.6)1,926 (34.2)2,451 (37.6)
  • Abbreviations: Northeast: CT and NJ; South: KY, LA, GA; Midwest: Detroit, Iowa; West: Hawaii, NM, Seattle, Utah, CA.

  • aStatistical significance tests (age at diagnosis – ANOVA; all others – χ2) yielded P < 0.001.

  • bMissing: no information on location of tumor or stage of tumor; not included in totals used for frequency calculations.

  • cTotal number diagnosed with ncGC sample sizes: Total – 34,054; NHW – 18,444; API – 5,403; Hispanic – 4,683; black: 5,524.

  • dIn situ & Local categories were combined due to small cell sizes (<11) for in situ.

  • eOther: Other, specified sites of stomach and stomach unspecified.