Table 1.
Selected characteristics of participants according to NSCLC
| Characteristics | Number (N = 78) | % | Metastasis | p a | ||
|---|---|---|---|---|---|---|
| + | - | |||||
| Age | ||||||
| ≧65 | 49 | 63 | 25 | 24 | 0.64 | |
| <65 | 29 | 37 | 17 | 12 | ||
| Sex | ||||||
| Male | 56 | 72 | 28 | 28 | 0.32 | |
| Female | 22 | 28 | 14 | 8 | ||
| Smoking index | ||||||
| ≧20 pack-year | 35 | 45 | 17 | 18 | 0.49 | |
| <20 pack-year | 43 | 55 | 25 | 18 | ||
| Histologic type | ||||||
| Squamous cell | 25 | 32 | 11 | 14 | 0.46b | |
| Adenocarcinoma | 46 | 59 | 25 | 21 | ||
| Large cell | 5 | 6 | 4 | 1 | ||
| Other cell type | 2 | 3 | 2 | 0 | ||
| Differentiation | ||||||
| Well | 5 | 6 | 1 | 4 | ||
| Moderate | 51 | 65 | 28 | 23 | 0.80b | |
| Poor | 22 | 28 | 13 | 9 | ||
| Tumor size | ||||||
| ≧5 cm | 18 | 23 | 11 | 7 | 0.59 | |
| <5 cm | 59 | 76 | 31 | 28 | ||
| pN status | ||||||
| Positive | 54 | 69 | 25 | 29 | 0.09 | |
| Negative | 25 | 32 | 17 | 7 | ||
| pM status | ||||||
| Positive | 5 | 6 | 5 | 0 | 0.20 | |
| Negative | 73 | 94 | 37 | 36 | ||
| Pathologic stage | ||||||
| Stage I | 36 | 46 | 10 | 26 | 3.0E-5c | |
| Stage II | 11 | 14 | 7 | 4 | ||
| Stage III | 26 | 33 | 20 | 6 | ||
| Stage IV | 5 | 6 | 5 | 0 | ||
aThe two-sided p-values were calculated by Fisher's exact test.
bThe p-values were calculated using the two variables with the largest numbers of patients.
cThe p-value was calculated to measure the association between two variables (Stage I and Stages II, III and IV).