Table 2 Comparison of general information before and after matching between RAL and LSC subgroup of LL group.
Entire cohort | X2/t | P | PSM cohort | X2/t | P | |||
|---|---|---|---|---|---|---|---|---|
LL-LCS | LL-RAL | LL-LCS | LL-RAL | |||||
Age, years | 65.19 ± 7.01 | 62.36 ± 6.68 | 2.428 | 0.016 | 63.87 ± 6.09 | 63.62 ± 6.88 | 0.174 | 0.862 |
Sex, n (%) | 0.003 | 0.955 | 0.000 | 1.000 | ||||
Male | 18(24.66) | 16(24.24) | 9(23.08) | 9(23.08) | ||||
Female | 55(75.34) | 50(75.76) | 30(76.92) | 30(76.92) | ||||
BMI(kg/m2) | 24.66 ± 2.46 | 24.98 ± 2.85 | -0.727 | 0.469 | 24.92 ± 2.67 | 24.67 ± 2.61 | 0.429 | 0.669 |
Abdominal Surgery History(%) | 0.903 | 0.342 | 0.831 | 0.362 | ||||
No | 63(86.30) | 53(80.30) | 31(79.49) | 34(87.18) | ||||
Yes | 10(13.70) | 13(19.70) | 8(20.51) | 5(12.82) | ||||
Cardiopulmonary Diseases History(%) | 0.046 | 0.830 | 0.059 | 0.808 | ||||
No | 51(69.86) | 45(68.18) | 26(66.67) | 27(69.23) | ||||
Yes | 22(30.14) | 21(31.82) | 13(33.33) | 12(30.77) | ||||
Diabetes History(%) | 0.003 | 0.954 | 0.083 | 0.774 | ||||
No | 60(82.19) | 54(81.82) | 31(79.49) | 32(82.05) | ||||
Yes | 13(17.81) | 12(18.18) | 8(20.51) | 7(17.95) | ||||
Preoperative pyloric obstruction(%) | 0.074 | 0.786 | 0.831 | 0.362 | ||||
No | 61(83.56) | 54(81.82) | 34(87.18) | 31(79.49) | ||||
Yes | 12(16.44) | 12(18.18) | 5(12.82) | 8(20.51) | ||||
Preoperative smoking(%) | 0.177 | 0.674 | 0.831 | 0.362 | ||||
No | 60(82.19) | 56(84.85) | 31(79.49) | 34(87.18) | ||||
Yes | 13(17.81) | 10(15.15) | 8(20.51) | 5(12.82) | ||||
Preoperative malnutrition(%) | 0.009 | 0.923 | 0.626 | 0.429 | ||||
No | 58(79.45) | 52(78.79) | 28(71.79) | 31(79.49) | ||||
Yes | 15(20.55) | 14(21.21) | 11(28.21) | 8(20.51) | ||||
Preoperative neoadjuvant chemotherapy(%) | 0.296 | 0.586 | 0.000 | 1.000 | ||||
No | 71(97.26) | 62(93.94) | 37(94.87) | 38(97.44) | ||||
Yes | 2(2.74) | 4(6.06) | 2(5.13) | 1(2.56) | ||||
ASA classification, n (%) | 2.547 | 0.280 | 0.266 | 0.875 | ||||
I | 36(49.32) | 30(45.45) | 20(51.28) | 19(48.72) | ||||
II | 16(21.92) | 22(33.33) | 10(25.64) | 12(30.77) | ||||
III | 21(28.77) | 14(21.21) | 9(23.08) | 8(20.51) | ||||
Tumor TNM staging | 4.411 | 0.220 | 3.752 | 0.289 | ||||
I | 15(20.55) | 22(33.33) | 10(25.64) | 13(33.33) | ||||
II | 17(23.29) | 18(27.27) | 9(23.08) | 8(20.51) | ||||
III | 29(39.73) | 19(28.79) | 18(46.15) | 12(30.77) | ||||
IV | 12(16.44) | 7(10.61) | 2(5.13) | 6(15.38) | ||||
Tumor size (cm) | 3.4 ± 0.96 | 3.36 ± 1.11 | 0.199 | 0.843 | 3.39 ± 0.91 | 3.31 ± 1.17 | 0.330 | 0.742 |
Distance between tumor and anus (cm) | 8.34 ± 2.51 | 8.6 ± 2.64 | -0.602 | 0.548 | 8.60 ± 2.68 | 8.29 ± 2.78 | 0.505 | 0.615 |
Tumor location(%) | 7.084 | 0.029 | 0.511 | 0.774 | ||||
Lower (≤ 5 cm) | 21(28.77) | 8(12.12) | 8(20.51) | 7(17.95) | ||||
Middle (5.1–10 cm) | 28(38.36) | 25(37.88) | 19(48.72) | 17(43.59) | ||||
Upper (10.1–15 cm) | 24(32.88) | 33(50.00) | 12(30.77) | 15(38.46) | ||||
Degree of tumor differentiation(%) | 2.136 | 0.344 | 0.524 | 0.769 | ||||
low | 17(23.29) | 9(13.64) | 9(23.08) | 7(17.95) | ||||
middle | 33(45.21) | 33(50.00) | 18(46.15) | 21(53.85) | ||||
high | 23(31.51) | 24(36.36) | 12(30.77) | 11(28.21) | ||||
