Table 4 Fisher’s exact test results for the identification of risk factors for contralateral retropharyngeal lymph node metastasis
Variables | Total cohort (Column %) | CRPLN positive (Column %) | CRPLN negative (Column %) | p-value |
|---|---|---|---|---|
n = 155 | n = 10 | n = 145 | ||
Tumor site | ||||
Posterior wall | 28 (18) | 7 (70) | 21 (15) | < 0.001 |
Others | 127 (82) | 3 (30) | 124 (86) |