Table 1.
Clinicopathologic characteristics of the study cohort of patients with resectable PDAC (N =8542)
| Variable | Median (IQR)/N (%) |
|---|---|
| Age, years | 66 (58, 74) |
| Race | |
| White | 7014 (82.1%) |
| Black | 896 (10.5%) |
| Other/unknown | 632 (7.4) |
| Sex | |
| Male | 4332 (50.7%) |
| Female | 4210 (49.3%) |
| Marital status | |
| Married | 5318 (62.3%) |
| Unmarried | 2992 (35.0%) |
| Unknown | 232 (2.7%) |
| Year of diagnosis | |
| 2004-2006 | 2437 (28.5%) |
| 2007-2009 | 2966 (34.7%) |
| 2010-2012 | 3139 (36.7%) |
| SEER region | |
| Midwest | 1352 (15.8%) |
| Northeast | 1611 (18.9%) |
| South | 1486 (17.4%) |
| West | 4093 (47.9%) |
| Tumor site | |
| Head | 6641 (77.7%) |
| Body | 481 (5.6%) |
| Tail | 648 (7.6%) |
| Overlapping/unknown | 772 (9.0%) |
| Tumor grade | |
| I/II | 4863 (56.9) |
| III/IV | 2856 (33.5) |
| Unknown | 823 (9.6%) |
| Tumor size | 31 (25, 40) |
| ≤2cm (8th T1) | 1466 (17.2%) |
| >2cm and ≤4cm (8th T2) | 5063 (59.3%) |
| >4cm (8th T3) | 2013 (23.6%) |
| 7th AJCC T stage | |
| T1 (≤2cm and limited to the pancreas) | 550 (6.4%) |
| T2 (>2cm and ≤4cm and limited to the pancreas) | 1216 (14.2%) |
| T3 (extended beyond the pancreas) | 6776 (79.3%) |
| Positive node count | 1 (0, 3) |
| 0 (8th N0) | 3049 (35.7%) |
| 1-3 (8th N1) | 2869 (33.6%) |
| ≥4 (8th N2) | 2624 (30.7%) |
| Examined node count | 13 (7, 19) |
PDAC, pancreatic ductal adenocarcinoma; IQR, interquartile range; SEER, Surveillance, Epidemiology, and End Results; AJCC, American Joint Committee on Cancer.