Table 4.
LNs assessment of matched populations.
| Characteristic | RATS(N = 97) | VATS(N = 97) | OL(N = 97) | p Value | RATS vs VATS a | RATS vs OL a | VATS vs OL a |
|---|---|---|---|---|---|---|---|
| Number of N1 LNs, mean ± SD | 5.10 ± 2.40 | 4.18 ± 2.78 | 5.79 ± 3.62 | <0.001 | 0.009 | 0.730 | <0.001 |
| Number of N1 LN stations, mean ± SD | 2.38 ± 0.86 | 2.26 ± 0.82 | 2.40 ± 0.86 | 0.415 | 1.000 | 1.000 | 0.599 |
| Number of N2 LNs, mean ± SD | 6.91 ± 4.50 | 5.63 ± 3.53 | 7.74 ± 4.29 | <0.001 | 0.056 | 0.289 | <0.001 |
| Number of N2 LN stations, mean ± SD | 3.13 ± 1.34 | 3.14 ± 1.26 | 3.35 ± 1.24 | 0.298 | 1.000 | 0.427 | 0.718 |
| Total number of LNs, mean ± SD | 12.01 ± 5.55 | 9.81 ± 4.55 | 13.54 ± 6.05 | <0.001 | 0.007 | 0.075 | <0.001 |
| Total number of LN stations, mean ± SD | 5.52 ± 1.69 | 5.39 ± 1.57 | 5.72 ± 1.77 | 0.124 | 1.000 | 0.347 | 0.167 |
| Nodal upstaging, n (%) cN0-pN1 cN0-pN2 cN1-pN2 |
9 (9.28%) 5 (5.15%) 3 (3.09%) 1 (1.03%) |
10 (10.31%) 6 (6.19%) 3 (3.09%) 1 (1.03%) |
15 (15.46%) 7 (7.22%) 6 (6.19%) 2 (2.06%) |
0.356 0.837 0.609 1.000 |
>0.050 >0.050 >0.050 >0.050 |
>0.050 >0.050 >0.050 >0.050 |
>0.050 >0.050 >0.050 >0.050 |
a
Adjusted p value of multiple comparisons between every two groups. LNs, lymph nodes; RATS, robotic-assisted thoracoscopic surgery; VATS, video-assisted thoracoscopic surgery; OL, open lobectomy; SD, standard deviation.