Table 1 Patient and tumor characteristics between the HTRT group and the IMRT-alone group before and after PSM
Variable | prePSM (n = 177) | postPSM(n = 84) | ||||
|---|---|---|---|---|---|---|
HTRT n = 42,n(%) | IMRT-alone n = 135,n(%) | P | HTRT n = 42,n(%) | IMRT-alone n = 42,n(%) | P | |
Age(x̅ ± s), years | 76.57 ± 6.92 | 75.40 ± 6.91 | 0.339 | 76.57 ± 6.92 | 77.55 ± 5.58 | 0.479 |
V20(x̅ ± s),% | 21.38 ± 3.03 | 20.96 ± 4.62 | 0.497 | 21.38 ± 3.03 | 20.71 ± 4.19 | 0.400 |
V30(x̅ ± s),% | 10.53 ± 2.93 | 11.13 ± 3.78 | 0.422 | 10.53 ± 2.93 | 11.31 ± 3.95 | 0.312 |
MLD(x̅ ± s), Gy | 10.79 ± 1.60 | 10.90 ± 1.98 | 0.738 | 10.79 ± 1.60 | 10.86 ± 1.88 | 0.866 |
Sex | 0.645 | |||||
Male | 32(76) | 98(72.6) | 32(76) | 35(83) | 0.415 | |
Female | 10(24) | 37(27.4) | 10(24) | 7(17) | ||
Tumor Location | 0.640 | 0.723 | ||||
Upper thoracic esophagus | 6(14) | 20(14.8) | 6(14) | 6(14) | ||
Middle thoracic esophagus | 16(38) | 56(41.5) | 16(38) | 14(33) | ||
Lower thoracic esophagus | 20(48) | 59(43.7) | 20(48) | 22(53) | ||
Tumor stage | 0.870 | 0.659 | ||||
I | 0 (0) | 9 (6.7) | 0 (0) | 0 (0) | ||
II | 24(57) | 65(48.1) | 24(57) | 26(62) | ||
III | 18(43) | 61(45.2) | 18(43) | 16(38) | ||
KPS Score | 0.017 | 0.671 | ||||
70 | 16(38) | 46(34.1) | 16(38) | 18(43) | ||
80 | 25(60) | 78(57.8) | 25(60) | 23(55) | ||
90 | 1 (2) | 11(8.1) | 1(22) | 1(2) | ||
Diabetes | 1 | 0.457 | ||||
No | 39(93) | 125(92.6) | 39(93) | 37(88) | ||
Yes | 3 (7) | 10(7.4) | 3(7) | 5(12) | ||
Smoking | 0.063 | 1 | ||||
No | 20(48) | 86(63.7) | 20(48) | 20(50) | ||
Yes | 22(52) | 49(36.3) | 22(52) | 22(50) | ||
Hypertension status | 0.967 | 0.662 | ||||
No | 21(50) | 68(50.4) | 21(50) | 19(45) | ||
Yes | 21(50) | 67(49.6) | 21(50) | 23(55) | ||
Underlying Lung Disease | 0.400 | 0.821 | ||||
No | 16(38) | 42(31.1) | 16(38) | 15(36) | ||
Yes | 26(62) | 93(68.9) | 26(62) | 27(64) | ||
Median radiotherapy dose, M(IQR), Gy | 60(4) | 60(6) | 0.011 | 60(4) | 61(4) | 0.797 |
Median tumor length, M(IQR), cm | 6(2) | 6(3) | 0.638 | 6(2) | 5(3) | 0.732 |