Research Article
A Proposal of a Personalized Surveillance Strategy for Gastric Cancer: A Retrospective Analysis of 9191 Patients
Table 1
Demographic and pathological characteristics of patients from the SEER database.
| | Characteristic | All patients () | | Mean or no. |
| | Sex | | | Male | 5228 (56.9%) | | Female | 3963 (43.1%) | | Age in years | | | ≤60 | 2790 (30.4%) | | >60 | 6401 (69.6%) | | Median (IQR) | 69 (57-77) | | | | | Race | | | White | 5319 (57.9%) | | Black | 1454 (15.8%) | | Others | 2402 (26.1%) | | Unknown | 16 (0.2%) | | Grade | | | Well differentiated | 326 (3.5%) | | Moderately differentiated | 2162 (23.5%) | | Poorly differentiated | 6185 (67.3%) | | Undifferentiated | 235 (2.6%) | | Unknown | 283 (3.1%) | | Primary site | | | Fundus | 384 (4.2%) | | Body | 1022 (11.1%) | | Antrum | 3265 (35.5%) | | Pylorus | 569 (6.2%) | | Lesser curvature | 1603 (17.4%) | | Greater curvature | 648 (7.1%) | | Overlapping lesion | 808 (8.8%) | | NOS | 892 (9.7%) | | Size | | | ≤4.5 cm | 4737 (51.5%) | | >4.5 cm | 4454 (48.5%) | | (cm) | | | T stage | | | T1a | 612 (6.6%) | | T1b | 1099 (12.0%) | | T2 | 1127 (12.3%) | | T3 | 3650 (39.7%) | | T4a | 1796 (19.5%) | | T4b | 907 (9.9%) | | N stage | | | N0 | 3361 (36.6%) | | N1 | 1735 (18.9%) | | N2 | 1798 (19.6%) | | N3a | 1659 (18.0%) | | N3b | 638 (6.9%) | | TNM stage | | | IA | 1331 (14.5%) | | IB | 806 (8.8%) | | IIA | 1357 (14.8%) | | IIB | 1269 (13.7%) | | IIIA | 1287 (14.0%) | | IIIB | 1836 (20.0%) | | IIIC | 1305 (14.2%) | | Number of LNs examined | | | ≤15 | 5491 (59.7%) | | >15 | 3700 (40.3%) | | Median (IQR) | 13 (7-21) | | | | | Number of positive LNs | | | Median (IQR) | 2 (0-6) | | | |
|
|
No.: number of patients; SD: standard deviation; IQR: interquartile range; LNs: lymph nodes. American Indian/AK native or Asian/Pacific Islander. |
