Table 1 Characteristics of included RPLS cases in STR group and non-STR group
Variables | Total (n = 296) | STR group (n = 143) | non-STR group (n = 153) | p value | |
|---|---|---|---|---|---|
Demographic characteristics | |||||
Gender | 0.539 | ||||
Male | 171 (57.8) | 80 (55.9) | 91 (59.5) | ||
Female | 125 (41.2) | 63 (44.1) | 62 (40.5) | ||
Age (years) | 53 (46, 60) | 54 (47, 60) | 53 (45, 61) | 0.321 | |
Preoperative NLR | 3.08 (1.89, 3.58) | 3.57 (2.20, 3.58) | 2.40 (1.69, 3.58) | 0.004 | |
BMI (kg/m2) | 23.55 (21.80, 24.80) | 23.55 (22.06, 24.61) | 23.55 (21.53, 25.51) | 0.472 | |
Smoking history | 0.026 | ||||
Yes | 50 (16.9) | 17 (11.9) | 33 (21.6) | ||
No | 246 (83.1) | 126 (88.1) | 120 (78.4) | ||
Diabetes | 0.085 | ||||
Yes | 15 (5.1) | 4 (2.8) | 11 (7.2) | ||
No | 281 (94.9) | 139 (97.2) | 142 (92.8) | ||
Clinical symptoms | 0.653 | ||||
Yes | 172 (58.1) | 85 (59.4) | 87 (56.9) | ||
No | 124 (41.9) | 58 (40.6) | 66 (43.1) | ||
Surgical characteristics | |||||
Surgical frequency | < 0.001 | ||||
1st time | 94 (31.8) | 28 (19.6) | 66 (43.1) | ||
2nd time | 80 (27.0) | 38 (26.6) | 42 (27.5) | ||
≥ 3rd time | 122 (41.2) | 77 (53.8) | 45 (29.4) | ||
Resection method | 0.567 | ||||
Piecemeal | 36 (12.2) | 19 (13.3) | 17 (11.1) | ||
Complete | 260 (87.8) | 124 (86.7) | 136 (88.9) | ||
Combined organ excision | 0.049 | ||||
Yes | 201 (67.9) | 105 (73.4) | 96 (62.7) | ||
No | 95 (32.1) | 38 (26.6) | 57 (37.3) | ||
Operative time (min) | 239 (174, 301) | 260 (196, 335) | 215 (160, 280) | < 0.001 | |
Intraoperative blood loss (ml) | 800 (400, 1575) | 1000 (500, 2000) | 700 (300, 1200) | < 0.001 | |
Intraperitoneal chemotherapy drug application | 0.414 | ||||
Yes | 121 (40.9) | 55 (38.5) | 66 (43.1) | ||
No | 175 (59.1) | 88 (61.5) | 87 (56.9) | ||
Transfer to ICU | 0.001 | ||||
Yes | 74 (25.0) | 48 (33.6) | 26 (17.0) | ||
No | 222 (75.0) | 95 (66.4) | 127 (83.0) | ||
Pathological characteristics | |||||
Tumor diameter (cm) | 23.0 (16.1, 30.0) | 23.0 (16.5, 30.0) | 22.0 (16.0, 30.0) | 0.700 | |
Multiple primary tumors | < 0.001 | ||||
Yes | 151 (51.0) | 88 (61.5) | 63 (41.2) | ||
No | 145 (49.0) | 55 (38.5) | 90 (58.8) | ||
Tumor shape | 0.024 | ||||
Irregular | 115 (38.9) | 65 (45.5) | 50 (32.7) | ||
Regular | 181 (61.1) | 78 (54.5) | 103 (67.3) | ||
Tumor capsule | < 0.001 | ||||
Intact | 176 (59.5) | 70 (49.0) | 106 (69.3) | ||
Broken | 120 (40.5) | 73 (51.0) | 47 (30.7) | ||
Histological subtype | < 0.001 | ||||
Well-differentiated | 69 (23.3) | 16 (11.2) | 53 (34.6) | ||
De-differentiated | 64 (21.6) | 47 (32.9) | 17 (9.2) | ||
Other subtypes | 163 (55.1) | 80 (55.9) | 83 (56.2) | ||
Tumor necrosis | < 0.001 | ||||
Yes | 70 (23.6) | 49 (34.3) | 21 (13.7) | ||
No | 226 (76.4) | 94 (65.7) | 132 (86.3) | ||