Clinicopathologic parameters | Number of cases | Average survival (month) | 95% CI | χ2 | p | |
---|---|---|---|---|---|---|
n | % | |||||
Age |  |  |  |  | 163.160 |  < 0.001 |
  18–65 | 2071 | 54.41 | 15.061 | 14.107–16.014 |  |  |
    ≥ 66 | 1735 | 45.59 | 8.806 | 8.070–9.542 |  |  |
Marital status |  |  |  |  | 43.985 |  < 0.001 |
  Non-married | 1786 | 46.93 | 10.377 | 9.550–11.205 |  |  |
  Married | 2020 | 53.07 | 13.808 | 12.890–14.727 |  |  |
Primary site | Â | Â | Â | Â | 10.727 | 0.013 |
  Main bronchus | 187 | 4.91 | 9.0410 | 6.979–11.102 |  |  |
  Upper lobe, lung | 2390 | 62.80 | 12.503 | 11.708–13.299 |  |  |
  Middle lobe, lung | 170 | 4.47 | 13.994 | 10.790–17.198 |  |  |
  Lower lobe, lung | 1059 | 27.82 | 11.686 | 10.520–12.852 |  |  |
Race |  |  |  |  | 16.999 |  < 0.001 |
  White | 2978 | 78.24 | 11.861 | 11.172–12.549 |  |  |
  Black | 510 | 13.40 | 11.708 | 10.061–13.355 |  |  |
  Other | 318 | 8.36 | 15.783 | 13.418–18.148 |  |  |
Surgery |  |  |  |  | 184.795 |  < 0.001 |
  No surgery | 3463 | 90.99 | 10.550 | 9.978–11.121 |  |  |
  Surgery | 343 | 9.01 | 28.233 | 25.065–31.401 |  |  |
Gender |  |  |  |  | 31.990 |  < 0.001 |
  Male | 1970 | 51.76 | 10.804 | 10.008–11.600 |  |  |
  Female | 1836 | 48.24 | 13.706 | 12.746–14.667 |  |  |
Grade |  |  |  |  | 71.301 |  < 0.001 |
  I | 140 | 3.68 | 19.020 | 14.870–23.170 |  |  |
  II | 880 | 23.12 | 15.229 | 13.807–16.651 |  |  |
  III | 2446 | 64.27 | 10.996 | 10.270–11.722 |  |  |
  IV | 340 | 8.93 | 9.712 | 8.026–11.398 |  |  |
Laterality | Â | Â | Â | Â | 0.475 | 0.491 |
  Left | 1596 | 41.93 | 12.216 | 11.293–13.138 |  |  |
  Right | 2210 | 58.07 | 12.153 | 11.318–12.988 |  |  |
Histologic type |  |  |  |  | 98.416 |  < 0.001 |
  Squamous cell carcinoma | 555 | 14.58 | 8.131 | 7.085–9.176 |  |  |
  Adenocarcinoma | 2201 | 57.83 | 14.318 | 13.411–15.225 |  |  |
  Small cell lung cancer | 335 | 8.80 | 9.832 | 8.156–11.507 |  |  |
  Large cell carcinoma | 101 | 2.65 | 8.456 | 6.289–10.623 |  |  |
  Others | 614 | 16.13 | 10.049 | 8.656–11.442 |  |  |
T stage |  |  |  |  | 58.295 |  < 0.001 |
  T1 | 430 | 11.30 | 16.512 | 14.280–18.744 |  |  |
  T2 | 1283 | 33.71 | 13.424 | 12.311–14.537 |  |  |
  T3 | 1014 | 26.64 | 10.74 | 9.625–11.855 |  |  |
  T4 | 1079 | 28.35 | 10.234 | 9.219–11.248 |  |  |
N stage |  |  |  |  | 25.029 |  < 0.001 |
  N0 | 1078 | 28.32 | 14.532 | 13.183–15.882 |  |  |
  N1 | 400 | 10.51 | 12.973 | 11.025–14.921 |  |  |
  N2 | 1778 | 46.72 | 11.123 | 10.302–11.943 |  |  |
  N3 | 550 | 14.45 | 10.118 | 8.739–11.496 |  |  |
Overall | 3806 | 100.00 | 12.234 | 11.604–12.864 |  |  |