Table 1.
Characteristics of the study population (n = 300).
| N (Number of Patients) | % | ||
|---|---|---|---|
| Sex | M (male) | 255 | 85 |
| F (female) | 45 | 15 | |
| Deceased | Yes | 116 | 38.7 |
| No | 184 | 61.3 | |
| Survival time for participants who died before the end of the study period | mean, (range) | 26 months (2–96) | |
| Survival time for entire cohort | mean, (range) | 47.6 months (2–101) | |
| Age | mean, (range) | 61 (41–82) | |
| Smoking status (pack-years) | mean, (range) | 37.2 (0–150) | |
| Smoking status | Yes | 288 | 96 |
| No | 12 | 4 | |
| Stage | I | 69 | 23 |
| II | 40 | 13.3 | |
| III | 66 | 22 | |
| IV | 125 | 41.7 | |
| Radiotherapy | Yes | 135 | 45 |
| No | 165 | 55 | |
| Chemotherapy | Yes | 30 | 10 |
| No | 270 | 90 | |
| Serum zinc level | mean, (range) | 640.43 μg/L (357.76–1317.87) | |