Table 1 Preoperative Characteristics of Patients and Tumors
Characteristics | Before PSM | After PSM | ||||
|---|---|---|---|---|---|---|
Group A (n = 77) | Group B (n = 92) | P-value | Group A (n = 67) | Group B (n = 67) | P-value | |
Gender (%) | 0.552 | 0.596 | ||||
Male | 51.95 | 56.52 | 58.21 | 62.69 | ||
Female | 48.05 | 43.48 | 41.79 | 37.31 | ||
Age (years) | 59.35 ± 10.98 | 60.57 ± 9.13 | 0.577 | 59.60 ± 11.76 | 60.64 ± 9.35 | 0.570 |
Tumor location (%) | 0.782 | 0.633 | ||||
Upper right | 33.77 | 30.43 | 37.31 | 35.82 | ||
Middle right | 6.49 | 9.78 | 5.97 | 5.97 | ||
Lower right | 20.78 | 15.22 | 23.88 | 14.93 | ||
Upper left | 19.48 | 22.83 | 22.39 | 26.87 | ||
Lower left | 19.48 | 21.74 | 10.45 | 16.42 | ||
Postoperative pathological staging (%) | 0.018 | 0.720 | ||||
IA | 77.92 | 55.43 | 74.63 | 68.66 | ||
IB | 3.90 | 17.39 | 4.48 | 5.97 | ||
IIA | 5.19 | 5.43 | 5.97 | 2.99 | ||
IIB | 5.19 | 7.61 | 5.97 | 7.46 | ||
IIIA | 7.79 | 14.13 | 8.96 | 14.93 | ||
Pathological types (%) | 0.619 | 0.360 | ||||
Adenocarcinoma | 68.83 | 65.22 | 70.15 | 62.69 | ||
Squamous cell carcinoma | 31.17 | 34.78 | 29.85 | 37.31 | ||