Table 1 Characteristics of the study population (n = 124) and overall survival
Characteristics | No. of Patients (%) | No. of Deaths (%)* | P †| MST (95% CI, month) | P ‡ |
|---|---|---|---|---|---|
Age | Â | Â | 0.456 | Â | 0.468 |
   ≤ 60 years | 55 (44.4) | 39 (70.9) |  | 21.0 (13.0-32.0) |  |
   > 60 years | 69 (56.6) | 53 (76.8) |  | 18.0 (13.0-26.0) |  |
Gender | Â | Â | 0.175 | Â | 0.046 |
   Female | 57 (46.0) | 39 (68.4) |  | 26.0 (17.0-38.0) |  |
   Male | 67 (54.0) | 53 (79.1) |  | 17.0 (12.0-22.0) |  |
Smoke | Â | Â | 0.752 | Â | 0.679 |
   Ever | 114 (91.9) | 85 (74.6) |  | 20.0 (16.0-26.0) |  |
   Never | 10 (8.1) | 7 (70.0) |  | 16.0 (11.0-18.0) |  |
Pack -year | Â | Â | 0.542 | Â | 0.861 |
   ≤ 40 | 60 (48.4) | 46 (75.0) |  | 19.0 (14.0-29.0) |  |
   > 40 | 64 (51.6) | 46 (73.0) |  | 20.0 (13.0-29.0) |  |
Histology | Â | Â | 0.828 | Â | 0.632 |
   Adenocarcinoma | 40 (32.3) | 31 (77.5) |  | 20.0 (17.0-31.0) |  |
   Squamous cell | 38 (31.6) | 28 (73.7) |  | 16.0 (12.0-25.0) |  |
   Others | 46 (37.1) | 33 (71.7) |  | 24.0 (13.0-36.0) |  |
KPS | Â | Â | 0.175 | Â | 0.067 |
   90-100 | 38 (30.7) | 24 (66.2) |  | 22.0 (16.0-39.0) |  |
   80 | 67 (54.0) | 53 (79.1) |  | 20.0 (14.0-27.0) |  |
   < 80 | 19 (15.3) | 15 (79.0) |  | 13.0 (8.0-29.0) |  |
Stage | Â | Â | 0.057 | Â | 0.088 |
   IIIa | 52 (41.9) | 34 (65.4) |  | 20.0 (16.0-39.0) |  |
   IIIb | 72 (58.1) | 58 (80.6) |  | 17.0 (13.0-23.0) |  |
Chemotherapy | Â | Â | 0.186 | Â | 0.766 |
   Yes | 112 (90.3) | 85 (75.9) |  | 20.0 (16.0-26.0) |  |
   No | 12 (9.7) | 7 (58.3) |  | 17.0 (11.0-44.0) |  |
Radiotherapy dose | Â | Â | 0.360 | Â | 0.857 |
   < 70Gy | 59 (47.6) | 46 (78.0) |  | 21.0 (16.0-33.0) |  |
   ≥ 70Gy | 65 (52.4) | 46 (70.8) |  | 17.0 (12.0-24.0) |  |