Table 1. Characteristics of samples.
| Characteristics | Patients (N=61) | Controls (N=53) | P value |
|---|---|---|---|
| Male rate, n (%) | 20 (32.79%) | 19 (35.85%) | 0.731a |
| Median age, years [range] | 54.84±7.67 [44–70] | 55.17±6.00 [44–60] | 0.075b |
| Smoking history, n (%) | |||
| ≤20 years | 44 (72.13) | 38 (71.70) | 0.959a |
| >20 years | 17 (22.87) | 15 (28.30) | |
| Weight loss (WL), n (%) | |||
| ≤5% (body weight) | 41 (67.21) | – | |
| >5% (body weight) | 20 (32.79) | – | |
| Performance status (PS), n (%) | |||
| 0–1 | 40 (65.57) | – | |
| 2–4 | 21 (34.43) | – | |
| Tumor type, n (%) | |||
| ADC | 44 (72.13) | – | |
| SCC | 15 (24.59) | – | |
| SCLC | 2 (3.28) | – | |
| Stage, n (%) | |||
| I | 28 (45.90) | – | |
| II | 14 (22.95) | – | |
| III | 16 (26.23) | – | |
| IV | 3 (4.92) | – |
a, Pearson Chi-square test; b, independent sample t-test.