Table 1 Clinicopathological characteristics of elderly patients with GBC

Age

76.6 (7.37)

76.5 (7.32)

76.9 (7.50)

0.170

Race

0.451

 white

2492 (77.0%)

1709 (76.4%)

783 (78.3%)

 black

365 (11.3%)

256 (11.4%)

109 (10.9%)

 other

380 (11.7%)

272 (12.2%)

108 (10.8%)

Sex

0.580

 Male

1014 (31.3%)

708 (31.6%)

306 (30.6%)

 Female

2223 (68.7%)

1529 (68.4%)

694 (69.4%)

Marital

0.101

 Married

1541 (47.6%)

1087 (48.6%)

454 (45.4%)

 No

1696 (52.4%)

1150 (51.4%)

546 (54.6%)

Year of diagnosis

0.697

 2004–2009

1290 (39.9%)

897 (40.1%)

393 (39.3%)

 2010–2015

1947 (60.1%)

1340 (59.9%)

607 (60.7%)

Histologic type

0.646

 Adenocarcinoma

2370 (73.2%)

1632 (73.0%)

738 (73.8%)

 Non-adenocarcinoma

867 (26.8%)

605 (27.0%)

262 (26.2%)

Grade

0.644

 I

396 (12.2%)

282 (12.6%)

114 (11.4%)

 II

1189 (36.7%)

819 (36.6%)

370 (37.0%)

 III

1040 (32.1%)

704 (31.5%)

336 (33.6%)

 IV

82 (2.53%)

57 (2.55%)

25 (2.50%)

 Unknown

530 (16.4%)

375 (16.8%)

155 (15.5%)

T

0.098

 T1

554 (17.1%)

388 (17.3%)

166 (16.6%)

 T2

1223 (37.8%)

847 (37.9%)

376 (37.6%)

 T3

1321 (40.8%)

894 (40.0%)

427 (42.7%)

 T4

139 (4.29%)

108 (4.83%)

31 (3.10%)

N

0.261

 N0

2292 (70.8%)

1570 (70.2%)

722 (72.2%)

 N1

945 (29.2%)

667 (29.8%)

278 (27.8%)

M

0.742

 M0

2479 (76.6%)

1709 (76.4%)

770 (77.0%)

 M1

758 (23.4%)

528 (23.6%)

230 (23.0%)

 Tumor size

38.0 (26.9)

37.8 (26.9)

38.3 (26.9)

0.635

Surgery

0.034

 No

560 (17.3%)

402 (18.0%)

158 (15.8%)

 Simple/partial surgery

545 (16.8%)

394 (17.6%)

151 (15.1%)

 Radical surgery

2132 (65.9%)

1441 (64.4%)

691 (69.1%)

Chemotherapy

0.217

 No/Unknown

2222 (68.6%)

1520 (67.9%)

702 (70.2%)

 Yes

1015 (31.4%)

717 (32.1%)

298 (29.8%)

Radiation

0.454

 No/Unknown

2720 (84.0%)

1872 (83.7%)

848 (84.8%)

 Yes

517 (16.0%)

365 (16.3%)

152 (15.2%)