Table 1.
Univariate analysis in predicting overall survival by clinicopathologic factors
| Variables | Patients (%) | Median overall survival (months) | P-valuea |
|---|---|---|---|
| All patients | 232 (100) | 16 | |
| Age (years) | 0.046 | ||
| ≤65 | 132 (57) | 18 | |
| >65 | 100 (43) | 15 | |
| Gender | 0.065 | ||
| Female | 64 (28) | 21 | |
| Male | 168 (72) | 15 | |
| Laterality | 0.040 | ||
| Left | 104 (45) | 17 | |
| Right | 128 (55) | 15 | |
| T stage | 0.013 | ||
| T1 | 20 (9) | 24 | (T1–2 vs T3–4) |
| T2 | 88 (38) | 18 | |
| T3 | 97 (42) | 15 | |
| T4 | 27 (12) | 14 | |
| N stage | 0.092 | ||
| N0 | 139 (60) | 19 | (N0 vs N1–3) |
| N1 | 17 (7) | 8 | |
| N2 | 74 (32) | 11 | |
| N3 | 2 (1) | Not applicable | |
| Stage | 0.007 | ||
| I | 14 (6) | 22 | (I–II vs III–IV) |
| II | 54 (23) | 19 | |
| III | 130 (56) | 14 | |
| IV | 34 (15) | 15 | |
| Surgical procedure | 0.472 | ||
| EPP | 115 (50) | 13 | |
| PD | 91 (39) | 19 | |
| Other procedures | 26 (11) | 15 | |
| Lymphatic invasion | <0.001 | ||
| Absent | 130 (56) | 22 | |
| Present | 102 (44) | 11 | |
| Vascular invasion | <0.001 | ||
| Absent | 178 (77) | 18 | |
| Present | 54 (23) | 9 |
EPP, extrapleural pneumonectomy; PD, pleurectomy/decortication.
a
All P-values are adjusted for stage, except for those corresponding to T stage, N stage, and stage.