Table 1.
Patient characteristic.
| Variables | Total 99(100%) | Recurrence 52(53%) | Non-Recurrence 47(47%) | P | |
|---|---|---|---|---|---|
| Age | 1.000 | ||||
| >65y | 27 (27) | 14 (52) | 13 (48) | ||
| ≤65y | 72 (73) | 38 (53) | 34 (47) | ||
| Gender | 0.227 | ||||
| female | 31 (31) | 13 (42) | 18 (58) | ||
| male | 68 (69) | 39 (57) | 29 (43) | ||
| KPS | 0.407 | ||||
| ≥90 | 60 (61) | 29 (48) | 31 (52) | ||
| <90 | 39 (39) | 23 (59) | 16 (41) | ||
| Smoking index | 0.084 | ||||
| <400 | 51 (52) | 22 (43) | 29 (57) | ||
| ≥400 | 48 (48) | 30 (63) | 18 (37) | ||
| Tumor location | 0.924 | ||||
| central | 49 (49) | 25 (51) | 24 (49) | ||
| peripheral | 50 (51) | 27 (54) | 23 (46) | ||
| Visceral pleural invasion | 1.000 | ||||
| yes | 51 (52) | 27 (53) | 24 (47) | ||
| no | 48 (48) | 25 (52) | 23 (48) | ||
| Histology subtype | 0.604 | ||||
| SCC | 48 (48) | 27 (56) | 21 (44) | ||
| ADC | 51 (52) | 25 (49) | 26 (51) | ||
| Pathologic stage | 0.055 | ||||
| IIB | 47 (47) | 19 (40) | 28 (60) | ||
| IIIA | 48 (48) | 30 (63) | 18 (37) | ||
| IIIB | 4 (4) | 3 (75) | 1 (25) | ||
| Adjuvant chemotherapy | 0.620 | ||||
| yes | 87 (88) | 47 (54) | 40 (46) | ||
| no | 12 (12) | 5 (42) | 7 (58) | ||
| Adjuvant radiotherapy | 0.609 | ||||
| yes | 22 (22) | 10 (45) | 12 (55) | ||
| no | 77 (78) | 42 (55) | 35 (45) | ||
Statistical significance determined by two-sided Chi-square test. KPS, Karnofsky performance status; SCC, Squamous cell carcinoma; ADC, Adenocarcinoma.