Table 2.
Clinicopathological features of 343 sporadic NSCLC cases and 280 healthy controls
| Lung cancer | Control | |
|---|---|---|
| Characteristics |
N(%) |
N(%) |
| Age in years: median |
62.04 ± 10.86 |
59.98 ± 9.65 |
| Gender |
|
|
| Female |
125(36.44) |
85(30.36) |
| Male |
218(63.56) |
195(69.64) |
| Smoking status |
|
|
| Never |
68(19.82) |
N/A |
| Ever |
107(31.20) |
N/A |
| N/A |
168(48.98) |
N/A |
| Pack years (median, range) |
432(20–732) |
N/A |
| Histological types |
|
|
| Adenocarcinoma |
120(34.98) |
|
| Squamous cell carcinoma |
204(59.48) |
|
| Adenosquamous carcinoma |
8(2.33%) |
|
| Others |
11(3.21)a |
|
| Clinical stageb |
|
|
| I |
76(22.89) |
|
| II |
58(17.47) |
|
| III |
91(27.41) |
|
| IV |
107(32.23) |
|
| Tumor differentiationb |
|
|
| Poor |
204(61.44) |
|
| Moderate and poor-moderate |
121(36.45) |
|
| Well and moderate-well |
7(2.11) |
|
| Lymph node metastasis |
|
|
| Negative |
154(44.90) |
|
| Positive | 189(55.10) |
a including: 11 small cell lung cancer; bfor non-small cell lung cancer.