TABLE 1.
Patient and tumor characteristics
| Variables | Total no. of cases (% of total) | No. of PR + CR cases (%) | No. of SD + PD cases (%) | P value |
|---|---|---|---|---|
| Age (years) | ||||
| ＜60 | 103 (37.1) | 53 (51.5) | 50 (48.5) | .513 |
| ≥60 | 175 (62.9) | 83 (47.4) | 92 (52.6) | |
| Gender | ||||
| Male | 230 (82.7) | 111 (48.3) | 119 (51.7) | .630 |
| Female | 48 (17.3) | 25 (52.1) | 23 (47.9) | |
| Primary tumor location | ||||
| Upper | 135 (48.6) | 79 (58.5) | 56 (41.5) | .002 |
| Middle | 102 (36.7) | 45 (44.1) | 57 (55.9) | |
| Lower | 41 (14.7) | 12 (29.3) | 29 (70.7) | |
| T category | ||||
| T2 | 52 (18.7) | 32 (61.5) | 20 (38.5) | .022 |
| T3 | 167 (60.1) | 83 (49.7) | 84 (50.3) | |
| T4 | 59 (21.2) | 21 (35.6) | 38 (64.4) | |
| N category | ||||
| N0 | 60 (21.6) | 35 (58.3) | 25 (41.7) | .044 |
| N1 | 121 (43.5) | 60 (49.6) | 61 (50.4) | |
| N2 | 81 (29.1) | 38 (46.9) | 43 (53.1) | |
| N3 | 16 (5.8) | 3 (18.8) | 13 (81.2) | |
| Tumor length | ||||
| <5 cm | 160 (57.6) | 81 (50.6) | 79 (49.4) | .508 |
| ≥5 cm | 118 (42.4) | 55 (46.6) | 63 (53.4) | |
PR, partial response; CR, complete response; SD, stable disease; PD, progressive disease.