Table 1.
Mapping of study population and tumor characteristics (n = 259).
| Item | Variables | N | % | Item | Variables | N | % |
|---|---|---|---|---|---|---|---|
| Tumor stage | Tumor histology | ||||||
| I only | 40 | 15 | Squamous cell CA | 2 | 1 | ||
| III only | 100 | 39 | Non-squamous cell CA | 7 | 3 | ||
| Stage I-III (mixed) | 64 | 25 | Mixed squamous and non-squamous cell CA | 209 | 81 | ||
| Other combinations (stage I &III, I & II, and II & III) | 55 | 21 | NR | 41 | 16 | ||
| Staging | |||||||
| PET-staged | 49 | 19 | Age | ||||
| PET or CT-staged | 20 | 8 | Predominantly or exclusively elderly (>65 y) | 12 | 5 | ||
| Non-PET staged | 59 | 23 | Non-elderly only (≤ 65 y) | 0 | 0 | ||
| NR | 131 | 51 | Mixed elderly and non-elderly ages | 233 | 90 | ||
| Performancestatus | NR | 14 | 5 | ||||
| Predominantly (≥80% of sample) ≤ 2 (ECOG) OR ≥ 60 (KPS) | 164 | 63 | |||||
| Unclear or other distribution | 46 | 18 | |||||
| NR | 49 | 19 |
CA, carcinoma; N, number of study reports; NR, not reported; PET, positron emission tomography; CT, computerized tomography; NR, not reported; ECOG, Eastern Cooperative Oncology Group; KPS, Karnofsky performance status.