Table 1.
Patient demographics and clinical characteristics of T1a gastric cancer patients
| Total N=923 N (%) |
LN− N=851 N (%) |
LN+ N=72 N (%) |
P value | |
|---|---|---|---|---|
| Age | 68 (58–76) | 68 (58–76) | 68 (54–75) | 0.62 |
| Median (IQR+) | ||||
|
| ||||
| Age Group | ||||
| 18–64 | 373 (40.4) | 343 (40.3) | 30 (41.7) | 0.82 |
| 65–90 | 550 (59.6) | 508 (59.7) | 42 (58.3) | |
|
| ||||
| Race/Ethnicity | ||||
| Non-Hispanic White | 278 (30.1) | 251 (29.5) | 27 (37.5) | 0.09 |
| Black | 147 (16.0) | 131 (15.4) | 16 (22.2) | |
| Hispanic White | 171 (18.5) | 159 (18.7) | 12 (16.7) | |
| Asian/Pacific Islanders | 327 (35.4) | 310 (36.4) | 17 (23.6) | |
|
| ||||
| Tumor Location | ||||
| Distal | 433 (46.9) | 407 (47.8) | 26 (36.1) | 0.29 |
| Proximal | 29 (3.2) | 26 (3.1) | 3 (4.2) | |
| Middle | 317 (34.3) | 288 (33.8) | 29 (40.3) | |
| Whole | 144 (15.6) | 130 (15.3) | 14 (19.4) | |
|
| ||||
| Grade | ||||
| Well Differentiated | 140 (15.2) | 137 (16.1) | 3 (4.2) | <0.01 |
| Moderately Differentiated | 255 (27.6) | 236 (27.7) | 19 (26.4) | |
| Poorly Differentiated | 408 (44.2) | 361 (42.4) | 47 (65.2) | |
| Undifferentiated | 16 (1.7) | 16 (1.9) | 0 (0.0) | |
| Unknown | 104 (11.3) | 101 (11.9) | 3 (4.2) | |
|
| ||||
| Tumor Size | ||||
| ≤2 cm | 505 (54.7) | 483 (56.8) | 22 (30.5) | <0.01 |
| >2 cm | 244 (26.4) | 205 (24.1) | 39 (54.2) | |
| Unknown | 174 (18.9) | 163 (19.1) | 11 (15.3) | |
|
| ||||
| Surgery Type | ||||
| Total/Near Total | 145 (15.7) | 137 (16.1) | 8 (11.1) | 0.26 |
| Partial | 778 (84.3) | 714 (83.9) | 64 (88.9) | |
|
| ||||
| # of Examined Nodes | ||||
| 1–14 | 590 (63.9) | 548 (64.4) | 42 (58.3) | 0.30 |
| ≥15 | 333 (36.1) | 303 (35.6) | 30 (41.7) | |
+
IQR=Interquartile Range