Table 1.
Comparison of baseline data between the two groups
| Characteristics | Bone metastasis group (n = 51) | Non-bone metastasis group (n = 181) | t/χ2 value | P value |
|---|---|---|---|---|
| Age (years) | 59.65±9.54 | 57.93±9.16 | 1.174 | 0.242 |
| Gender | 0.198 | 0.657 | ||
| Male | 23 (45.10) | 88 (48.62) | ||
| Female | 28 (54.90) | 93 (51.38) | ||
| BMI (kg/cm2) | 22.17±2.08 | 22.49±2.14 | 0.949 | 0.344 |
| Combined hypertension | 0.820 | 0.365 | ||
| Yes | 6 (11.76) | 14 (7.73) | ||
| No | 45 (88.24) | 167 (92.27) | ||
| Combined diabetes | 2.439 | 0.118 | ||
| Yes | 8 (15.69) | 15 (8.29) | ||
| No | 43 (84.31) | 166 (91.71) | ||
| Combined with hyperlipidemia | 0.590 | 0.442 | ||
| Yes | 5 (9.80) | 12 (6.63) | ||
| No | 46 (90.20) | 169 (93.37) | ||
| Malignant tumor type | 0.428 | 0.934 | ||
| Digestive system tumors | 16 (31.37) | 52 (28.73) | ||
| Respiratory system tumors | 14 (27.45) | 47 (25.97) | ||
| Genitourinary neoplasms | 11 (21.57) | 39 (21.55) | ||
| Breast system tumors | 10 (19.61) | 43 (23.75) | ||
| Tumor staging | 47.050 | <0.001 | ||
| I-II | 3 (5.88) | 109 (60.22) | ||
| III-IV | 48 (94.12) | 72 (39.78) | ||
| Lymph node metastasis | 40.072 | <0.001 | ||
| Yes | 42 (82.35) | 59 (32.60) | ||
| No | 9 (17.65) | 122 (67.40) | ||
| Primary tumor diameter (cm) | 2.71±0.84 | 2.54±0.63 | 1.667 | 0.097 |
| ECOG-PS score (points) | 2.18±0.75 | 1.46±0.46 | 8.465 | <0.001 |
Note: BMI: body mass index; ECOG-PS: Eastern Cancer Collaboration Group Performance Status.