Table 1.
Patient Demographic and Clinicopathologic Characteristics of Papillary Thyroid Cancer Patients in the SEER Program (2004–2012) and the NCDB (2004–2012)
| Patient characteristics | SEER (N = 64,342) | NCDB (N = 179,698) |
|---|---|---|
| Age, median (IQR) | 48 (38–58) | 49 (39–60) |
| Sex | ||
| Female | 50,736 (78.9%) | 139,778 (77.8%) |
| Race/ethnicity | ||
| White | 52,714 (81.9%) | 153,508 (87.0%) |
| Black | 3957 (6.2%) | 12,300 (7.0%) |
| Other | 7671 (11.9%) | 10,554 (5.9%) |
| Insurance status | ||
| Insured | 45,579 (70.8%) | 172,453 (95.9%) |
| Not insured | 1318 (2.1%) | 4652 (2.6%) |
| Margin statusa | ||
| Negative | — | 154,991 (86.3%) |
| Positive | — | 19,122 (10.6%) |
| Tumor focality | ||
| Multifocal | 26,356 (41.0%) | 71,144 (39.6%) |
| Unifocal | 37,199 (57.8%) | 104,772 (58.3%) |
| Extrathyroidal extension | ||
| Present | 10,764 (16.7%) | 27,982 (15.6%) |
| Absent | 53,578 (83.3%) | 151,539 (84.3%) |
| Surgery | ||
| Total | 55,057 (85.6%) | 153,302 (85.3%) |
| Partial | 9285 (14.4%) | 26,396 (14.7%) |
| Radioactive iodine | ||
| Yes | 32040 (49.8%) | 87,268 (48.6%) |
| No | 31,028 (48.2%) | 84,709 (47.1%) |
| Pathologic T stage | ||
| 1 | 40,420 (62.8%) | 117,129 (65.2%) |
| 2 | 10,196 (15.9%) | 27,937 (15.6%) |
| 3 | 11,461 (17.8%) | 29,093 (16.2%) |
| 4 | 2265 (3.5%) | 5539 (3.0%) |
| Pathologic M stage | ||
| 0 | 63,805 (99.2%) | 178,595 (99.4%) |
| 1 | 537 (0.8%) | 1103 (0.6%) |
Percentages may not add up to 100% due to missing data.
a
Margin status not captured in SEER.
SEER, Surveillance, Epidemiology, and End Results; NCDB, National Cancer Database; IQR, interquartile range.