Table 1 Clinical and pathological characteristics for kidney cancer patients with bone metastasis before and after PSM.
Variables | Before PSM | P-value | After PSM | P-value | ||
|---|---|---|---|---|---|---|
PTR group N = 1061, % | Non-PTR group N = 902, % | PTR group N = 308, % | Non-PTR group N = 308, % | |||
Age | < 0.001 | 0.914 | ||||
< 50 | 91 (8.58) | 135 (14.97) | 33 (10.71) | 35 (11.36) | ||
50–70 | 658 (62.02) | 604 (66.96) | 201 (65.26) | 203 (65.91) | ||
> 70 | 312 (29.41) | 163 (18.07) | 74 (24.03) | 70 (22.73) | ||
Sex | 0.463 | 0.657 | ||||
Female | 329 (31.01) | 265 (29.38) | 86 (27.92) | 92 (29.87) | ||
Male | 732 (68.99) | 637 (70.62) | 222 (72.08) | 216 (70.13) | ||
Race | 0.096 | 0.845 | ||||
Black | 118 (11.12) | 75 (8.31) | 26 (8.44) | 25 (8.12) | ||
Other | 67 (6.31) | 65 (7.21) | 13 (4.22) | 16 (5.19) | ||
White | 876 (82.56) | 762 (84.48) | 269 (87.34) | 267 (86.69) | ||
Histological type | < 0.001 | 0.800 | ||||
8310/3 | 417 (39.30) | 530 (58.76) | 160 (51.95) | 154 (50.00) | ||
8312/3 | 428 (40.34) | 132 (14.63) | 72 (23.38) | 79 (25.65) | ||
Other | 216 (20.36) | 240 (26.61) | 76 (24.68) | 75 (24.35) | ||
Laterality | 0.003 | 0.629 | ||||
Left | 524 (49.39) | 506 (56.10) | 149 (48.38) | 156 (50.65) | ||
Right | 537 (50.61) | 396 (43.90) | 159 (51.62) | 152 (49.35) | ||
Tumor size | < 0.001 | 0.970 | ||||
< 40 mm | 159 (14.99) | 73 (8.09) | 37 (12.01) | 38 (12.34) | ||
40–80 mm | 482 (45.43) | 404 (44.79) | 152 (49.35) | 149 (48.38) | ||
> 80 mm | 420 (39.59) | 425 (47.12) | 119 (38.64) | 121 (39.29) | ||
Grade | < 0.001 | 0.842 | ||||
I–II | 75 (7.07) | 139 (15.41) | 48 (15.58) | 51 (16.56) | ||
III–IV | 142 (13.38) | 626 (69.40) | 132 (42.86) | 125 (40.58) | ||
Unknown | 844 (79.55) | 137 (15.19) | 128 (41.56) | 132 (42.86) | ||
T stage | < 0.001 | 0.835 | ||||
T1 | 425 (40.06) | 168 (18.63) | 94 (30.52) | 97 (31.49) | ||
T2 | 283 (26.67) | 129 (14.30) | 60 (19.48) | 57 (18.51) | ||
T3 | 211 (19.89) | 510 (56.54) | 109 (35.39) | 102 (33.12) | ||
T4 | 142 (13.38) | 95 (10.53) | 45 (14.61) | 52 (16.88) | ||
N stage | < 0.001 | 1.000 | ||||
N0 | 641 (60.41) | 629 (69.73) | 197 (63.96) | 197 (63.96) | ||
N1 | 420 (39.59) | 273 (30.27) | 111 (36.04) | 111 (36.04) | ||
Brain metastasis | < 0.001 | 0.509 | ||||
No | 907 (85.49) | 838 (92.90) | 273 (88.64) | 279 (90.58) | ||
Yes | 154 (14.51) | 64 (7.10) | 35 (11.36) | 29 (9.42) | ||
Liver metastasis | < 0.001 | 0.661 | ||||
No | 827 (77.95) | 808 (89.58) | 261 (84.74) | 256 (83.12) | ||
Yes | 234 (22.05) | 94 (10.42) | 47 (15.26) | 52 (16.88) | ||
Lung metastasis | < 0.001 | 0.375 | ||||
No | 508 (47.88) | 544 (60.31) | 157 (50.97) | 169 (54.87) | ||
Yes | 553 (52.12) | 358 (39.69) | 151 (49.03) | 139 (45.13) | ||
Radiotherapy | 0.015 | 0.806 | ||||
No | 412 (38.83) | 400 (44.35) | 127 (41.23) | 131 (42.53) | ||
Yes | 649 (61.17) | 502 (55.65) | 181 (58.77) | 177 (57.47) | ||
Chemotherapy | 0.001 | 0.399 | ||||
No | 346 (32.61) | 361 (40.02) | 114 (37.01) | 103 (33.44) | ||
Yes | 715 (67.39) | 541 (59.98) | 194 (62.99) | 205 (66.56) | ||
Insurance | 0.965 | 1.000 | ||||
No | 35 (3.30) | 31 (3.44) | 13 (4.22) | 12 (3.90) | ||
Yes | 1026 (96.70) | 871 (96.56) | 295 (95.78) | 296 (96.10) | ||
Marital status | < 0.001 | 0.868 | ||||
No | 458 (43.17) | 296 (32.82) | 113 (36.69) | 116 (37.66) | ||
Yes | 603 (56.83) | 606 (67.18) | 195 (63.31) | 192 (62.34) | ||
