Table 1 Patient and treatment characteristics
Characteristic | No. | % |
|---|---|---|
Gender | Â | Â |
Male | 156 | 71.9 |
Female | 61 | 28.1 |
Age | Â | Â |
≤60 | 114 | 52.5 |
>60 | 103 | 47.5 |
Weight loss | Â | Â |
≤5 % | 208 | 95.9 |
>5 % | 9 | 4.1 |
Smoking History | Â | Â |
Negative | 98 | 45.2 |
Positive | 119 | 54.8 |
Preoperative KPS score | Â | Â |
70 | 8 | 3.7 |
≥80 | 209 | 96.3 |
Preoperative hemoglobin | Â | Â |
<120 g/l | 18 | 8.3 |
≥120 g/l | 199 | 91.7 |
Preoperative clinical stage N2 | Â | Â |
No | 88 | 40.6 |
Yes | 129 | 59.4 |
Histology | Â | Â |
Squamous | 87 | 40.1 |
Adenocarcinoma | 112 | 51.6 |
Adenosquamous | 12 | 5.5 |
Large cell | 6 | 2.8 |
Tumor stage | Â | Â |
T1 | 17 | 7.8 |
T2 | 163 | 75.1 |
T3 | 37 | 17.1 |
Laterality | Â | Â |
Left | 96 | 44.2 |
Right | 121 | 55.8 |
Location | Â | Â |
Upper/middle lobe | 135 | 62.2 |
Lower lobe | 82 | 37.8 |
Type of surgery | Â | Â |
Lobectomy | 196 | 90.3 |
Pneumonectomy | 21 | 9.7 |
Histologic grade | Â | Â |
Well/moderate | 144 | 66.4 |
Poor | 64 | 29.5 |
NS | 9 | 4.1 |
Adjuvant chemotherapy | Â | Â |
No | 58 | 26.7 |
Yes | 159 | 73.3 |
Postoperative radiotherapy | Â | Â |
No | 124 | 57.1 |
Yes | 93 | 42.9 |
No. of dissected lymphonodes | Â | Â |
1-20 | 103 | 47.5 |
20-60 | 114 | 52.5 |
No. of metastatic lymphonodes | Â | Â |
≤5 | 112 | 51.6 |
>5 | 105 | 48.4 |
LNR | Â | Â |
≥ 30 % | 110 | 50.7 |
< 30 % | 107 | 49.3 |
No. of metastatic mediastinal lymphonodes | Â | Â |
< 3 | 107 | 49.3 |
≥ 3 | 110 | 50.7 |
No. of metastatic mediastinal lymphonodes station | Â | Â |
1 | 136 | 62.7 |
2-4 | 81 | 37.3 |
Ratio of metastatic mediastinal lymphonodes station | Â | Â |
≤50 % | 108 | 49.8 |
>50 % | 108 | 49.8 |
NS | 1 | 0.5 |