Table 3 Factors related to recurrence in the 1st and 2nd lymph node groups
Variables | Recurrence in lymph node groups including the 1st and/or 2nd group | Recurrence in other lymph node groups except for the 1st or 2nd group | P value |
|---|---|---|---|
Invasion depth | |||
 (y)pT0-T2 | 43 | 19 | 0.025 |
 (y)pT3-T4 | 42 | 36 |  |
AJCC stage | |||
 0–II | 37 | 27 | 0.112 |
 III–IV | 48 | 28 |  |
Anastomosis condition | |||
 Anastomotic recurrence | 5 | 5 | 0.199 |
 Without defined anastomotic recurrence | 80 | 50 |  |
Concurrent distant metastasis | 0.500 | ||
 Yes | 19 | 8 |  |
 No | 66 | 47 |  |
Number of metastatic LN groups | |||
 ≥ 3 recurrent lymph node groups | 20 | 4 | 0.007 |
 < 3 recurrent lymph node groups | 65 | 51 |  |
Surgical method | |||
 Two-incision surgery | 25 | 13 | 0.235 |
 Three-incision surgery | 25 | 20 |  |