Table 1.
Baseline characteristics of patients.
| Characteristics | Overall frequency | Percentage (%) |
|---|---|---|
| Gender | ||
| Male | 37 | 56 |
| Female | 29 | 44 |
| Zubrod PS | ||
| N/A | 9 | 14 |
| 0 | 37 | 56 |
| 1 | 15 | 23 |
| 2 | 4 | 6 |
| 3 | 1 | 1 |
| Race | ||
| Caucasian | 53 | 80 |
| African | 6 | 9 |
| American | 4 | 6 |
| Hispanic | 2 | 3 |
| Asian | 1 | 2 |
| Hx of smoking | ||
| Yes | 57 | 86 |
| No | 9 | 14 |
| Still smoking | ||
| Yes | 11 | 17 |
| No | 55 | 83 |
| T stage | ||
| N/A | 3 | 5 |
| T0 | 1 | 2 |
| T1 | 9 | 14 |
| T2 | 21 | 32 |
| T3 | 16 | 24 |
| T4 | 14 | 20 |
| TX | 2 | 3 |
| N stage | ||
| N/A | 3 | 5 |
| N0 | 7 | 11 |
| N1 | 4 | 6 |
| N2 | 22 | 33 |
| N3 | 26 | 39 |
| NX | 4 | 6 |
| Clinical stage | ||
| IA | 3 | 5 |
| IB | 2 | 3 |
| IIA | 2 | 3 |
| IIB | 2 | 3 |
| III | 1 | 2 |
| IIIA | 15 | 22 |
| IIIB | 32 | 48 |
| IV | 9 | 14 |
| Modality | ||
| 3DCRT | 54 | 82 |
| IMRT | 5 | 8 |
| Mix | 7 | 10 |
| Median TVol | 95 cm3 | |
| Median dose | 63 Gy |
IMRT: intensity modulated radiation therapy; Mix: a combination of 3DCRT and IMRT planning; PlEf: pleural effusion; PS: performance status; TVol: tumor volume; 3DCRT: three dimensional conformal radiation therapy; Hx: history; N/A: not available.