Table 1 Clinicopathological characteristics of elderly patients with PTC

Age

72.4 (6.24)

72.3 (6.21)

72.5 (6.30)

Race

 White

8804 (83.7%)

6179 (83.7%)

2625 (83.6%)

 Black

505 (4.80%)

361 (4.89%)

144 (4.58%)

 Other

1211 (11.5%)

839 (11.4%)

372 (11.8%)

Sex

 Male

3348 (31.8%)

2343 (31.8%)

1005 (32.0%)

 Female

7172 (68.2%)

5036 (68.2%)

2136 (68.0%)

Marital

 No

4357 (41.4%)

3080 (41.7%)

1277 (40.7%)

 Married

6163 (58.6%)

4299 (58.3%)

1864 (59.3%)

Year of diagnosis

 2004–2009

4061 (38.6%)

2802 (38.0%)

1259 (40.1%)

 2010–2015

6459 (61.4%)

4577 (62.0%)

1882 (59.9%)

Grade

 I

1580 (15.0%)

1098 (14.9%)

482 (15.3%)

 II

416 (3.95%)

285 (3.86%)

131 (4.17%)

 III

143 (1.36%)

101 (1.37%)

42 (1.34%)

 IV

97 (0.92%)

68 (0.92%)

29 (0.92%)

Unknown

8284 (78.7%)

5827 (79.0%)

2457 (78.2%)

 T

 T1

6126 (58.2%)

4277 (58.0%)

1849 (58.9%)

 T2

1245 (11.8%)

873 (11.8%)

372 (11.8%)

 T3

2251 (21.4%)

1601 (21.7%)

650 (20.7%)

 T4

898 (8.54%)

628 (8.51%)

270 (8.60%)

N

 N0

8119 (77.2%)

5688 (77.1%)

2431 (77.4%)

 N1a

1350 (12.8%)

938 (12.7%)

412 (13.1%)

 N1b

1051 (9.99%)

753 (10.2%)

298 (9.49%)

M

 M0

10,236 (97.3%)

7192 (97.5%)

3044 (96.9%)

 M1

284 (2.70%)

187 (2.53%)

97 (3.09%)

 Tumor size

18.0 (17.7)

18.1 (18.0)

17.9 (16.9)

Surgery

 No

473 (4.50%)

324 (4.39%)

149 (4.74%)

 Lobectomy

1357 (12.9%)

924 (12.5%)

433 (13.8%)

 Subtotal or near total thyroidectomy

413 (3.93%)

290 (3.93%)

123 (3.92%)

 Total thyroidectomy

8277 (78.7%)

5841 (79.2%)

2436 (77.6%)

Chemotherapy

 No/Unknown

10,433 (99.2%)

7316 (99.1%)

3117 (99.2%)

 Yes

87 (0.83%)

63 (0.85%)

24 (0.76%)

Radiation

 No/Unknown

5995 (57.0%)

4209 (57.0%)

1786 (56.9%)

 Yes

4525 (43.0%)

3170 (43.0%)

1355 (43.1%)

 Survival months

79.1 (41.4)

78.8 (41.2)

79.6 (42.0)