Table 1.
Main characteristics
| TPLN (+) |
Before matching
|
After matching
|
|||
|
TPLN (-)
|
P
value (df)
|
TPLN (-)
|
P
value (df)
|
||
| Age, median, yr | 56.5 | 59 | 0.19 | 57.5 | 0.76 |
| Sex | 1.00 (1) | 1.00 (1) | |||
| Male | 14 | 156 | 78 | ||
| Female | 4 | 45 | 20 | ||
| Location | 0.73 (2) | 0.87 (2) | |||
| Upper | 0 | 6 | 1 | ||
| Middle | 10 | 115 | 50 | ||
| Lower | 8 | 80 | 47 | ||
| Grade | 0.31 (3) | 0.50 (3) | |||
| I | 0 | 21 | 5 | ||
| II | 11 | 133 | 68 | ||
| III | 6 | 39 | 23 | ||
| Unknown | 1 | 8 | 2 | ||
| T stage | 0.85 (3) | 0.82 (3) | |||
| T1 | 0 | 5 | 1 | ||
| T2 | 3 | 33 | 11 | ||
| T3 | 14 | 157 | 83 | ||
| T4 | 1 | 6 | 1 | ||
| N stage | 0.43 (3) | 0.76 (3) | |||
| N0 | 4 | 75 | 25 | ||
| N1 | 6 | 61 | 28 | ||
| N2 | 7 | 48 | 32 | ||
| N3 | 1 | 17 | 13 | ||
| Adjuvant therapy | 0.70 (2) | 0.91 (2) | |||
| Chemoradiotherapy | 3 | 24 | 14 | ||
| Chemotherapy | 8 | 109 | 49 | ||
| None | 7 | 68 | 35 | ||
df: Degree of freedom; TPLN: Thoracic paraaortic lymph node.