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. 2022 Mar;11(3):535–544. doi: 10.21037/gs-21-781

Table 1. Characteristics of patients from SEER database.

Variables Total (N=3,264)
Sex
   Female 2,228 (68.3%)
   Male 1,036 (31.7%)
Age (years)
   Mean (SD) 57.5 (15.5)
   Median [min, max] 58.0 [11.0, 85.0]
Age group (years)
   <55 1,351 (41.4%)
   ≥55 1,913 (58.6%)
Race
   Black 273 (8.4%)
   Other 223 (6.8%)
   White 2,768 (84.8%)
Summary stage
   Distant 132 (4.0%)
   Localized 2,749 (84.2%)
   Regional 383 (11.7%)
Tumor size (mm)
   Mean (SD) 36.6 (23.2)
   Median [min, max] 31.5 [0, 420]
T stage
   T1 821 (25.2%)
   T2 1,164 (35.7%)
   T3 1,141 (35.0%)
   T4 138 (4.2%)
N stage
   N0 3,080 (94.4%)
   N1 184 (5.6%)
M stage
   M0 3,174 (97.2%)
   M1 90 (2.8%)
AJCC stage
   I 1,328 (40.7%)
   II 886 (27.1%)
   III 830 (25.4%)
   IV 220 (6.7%)
Thyroidectomy
   No 41 (1.3%)
   Yes 3,223 (98.7%)

SEER, Surveillance, Epidemiology, and End Results; AJCC, American Joint Committee on Cancer.