Characteristics | Pre-PSM | Post-PSM | ||||||
---|---|---|---|---|---|---|---|---|
CRT | RT-alone | χ2 | P | CRT | RT-alone | χ2 | P | |
Gender (n) | Â | Â | 0.141 | 0.708 | Â | Â | 4.607 | 0.042 |
 Male | 84 | 366 |  |  | 76 | 91 |  |  |
 Female | 49 | 230 |  |  | 41 | 26 |  |  |
Mean age (year) | 73.3 ± 3.58 | 76.2 ± 4.39 |  | < 0.001 | 73.8 ± 3.7 | 73.9 ± 3.8 |  | 0.875 |
ECOG (n) |  |  | 29.776 | < 0.001 |  |  | 6.838 | 0.078 |
 0 | 15 | 208 |  |  | 15 | 23 |  |  |
 1 | 46 | 156 |  |  | 42 | 38 |  |  |
 2 | 66 | 203 |  |  | 57 | 46 |  |  |
 3 | 6 | 29 |  |  | 3 | 10 |  |  |
Preexisting chronic comorbidities (n) | ||||||||
 Hypertension | ||||||||
  yes | 33 | 207 | 4.845 | 0.032 | 32 | 28 | 0.359 | 0.654 |
  no | 100 | 389 |  |  | 85 | 89 |  |  |
 Cardiovascular disease | ||||||||
  yes | 16 | 78 | 0.108 | 0.886 | 14 | 22 | 2.101 | 0.204 |
  no | 117 | 518 |  |  | 103 | 95 |  |  |
 Pulmonary disease | ||||||||
  yes | 14 | 57 | 0.115 | 0.747 | 13 | 20 | 1.729 | 0.26 |
  no | 119 | 539 |  |  | 104 | 97 |  |  |
 Diabetes |  |  |  |  |  |  |  |  |
  yes | 12 | 69 | 0.718 | 0.449 | 11 | 13 | 0.186 | 0.83 |
  no | 121 | 527 |  |  | 106 | 104 |  |  |
Tumor location (n) | Â | Â | 10.204 | 0.037 | Â | Â | 4.728 | 0.316 |
 Cervical | 10 | 19 |  |  | 9 | 4 |  |  |
 Upper | 40 | 137 |  |  | 30 | 39 |  |  |
 Middle | 51 | 288 |  |  | 46 | 47 |  |  |
 Lower | 32 | 150 |  |  | 32 | 26 |  |  |
 EGJ | 0 | 2 |  |  | 0 | 1 |  |  |
Mean primary tumor length (cm) | 5.50 ± 2.30 | 5.38 ± 2.27 |  | 0.564 | 5.5 ± 2.1 | 5.7 ± 2.4 |  | 0.426 |
Mean primary tumor volume (cm3) | 50.82 ± 34.6 | 44.91 ± 33.14 |  | 0.255 | 50.2 ± 35.4 | 52.8 ± 32.4 |  | 0.56 |
Clinical T stage (n) | Â | Â | 8.959 | 0.03 | Â | Â | 3.411 | 0.333 |
 T1 | 0 | 10 |  |  | 0 | 3 |  |  |
 T2 | 14 | 113 |  |  | 13 | 10 |  |  |
 T3 | 56 | 245 |  |  | 53 | 52 |  |  |
 T4 | 63 | 228 |  |  | 51 | 52 |  |  |
Clinical N stage (n) | Â | Â | 0.14 | 0.769 | Â | Â | 0.018 | 1 |
 N0 | 51 | 239 |  |  | 46 | 45 |  |  |
 N1 | 82 | 357 |  |  | 71 | 72 |  |  |
Clinical M stage (n) | Â | Â | 13.287 | 0.001 | Â | Â | 0.186 | 0.83 |
 M0 | 114 | 564 |  |  | 106 | 104 |  |  |
 M1 | 19 | 32 |  |  | 11 | 13 |  |  |
Primary T GTV Dose (cGy) | 6120 ± 253 | 6067 ± 334 |  | 0.084 | 6105 ± 249 | 6052 ± 389 |  | 0.212 |