Table 2.
Distribution of Clinical and Pathologic Factors in Pure and Combined SCLC
| Factor | Pure SCLC (n = 160) |
Combined SCLC (n = 10) |
χ2 | p Value |
|---|---|---|---|---|
| Age | ||||
| ≥60 | 83 | 5 | 0.000 | 1.000 |
| <60 | 77 | 5 | ||
| Sex | ||||
| Male | 124 | 9 | 0.286 | 0.593 |
| Female | 36 | 1 | ||
| pStage | ||||
| I-II | 97 | 3 | 2.741 | 0.098 |
| III-IV | 60 | 7 | ||
| Smoking index | ||||
| ≥400 | 106 | 7 | 0.000 | 1.000 |
| <400 | 54 | 3 | ||
| Surgery type | ||||
| Lobectomy | 129 | 8 | 0.000 | 1.000 |
| Wedge resection | 31 | 2 | ||
| R resection | ||||
| R0 resection | 106 | 8 | 0.004 | 0.952 |
| R1 resection | 54 | 2 | ||
| Postoperative adjuvant chemotherapy | ||||
| Yes | 109 | 6 | 0.034 | 0.854 |
| No | 51 | 4 | ||
| NSE | ||||
| Normal | 73 | 5 | 0.000 | 1.000 |
| Abnormal | 70 | 5 | ||
| CEA | ||||
| Normal | 97 | 7 | 0.000 | 1.000 |
| Abnormal | 46 | 3 | ||
NSE, neuron-specific enolase; CEA, carcinoembryonic antigen.