Table 2 Patient’s baseline clinical characteristics and subgroup analysis of clinical characteristics among patients with and without smoking after propensity score analysis
Characteristics | Overall | Smoking | P value | SMD | |
|---|---|---|---|---|---|
No | Yes | ||||
n | 132 | 74 | 58 | ||
Primary tumor (%) | 0.219 | 0.309 | |||
 Slow | 35 (26.5) | 23 (31.1) | 12 (20.7) | ||
 Moderate | 47 (35.6) | 22 (29.7) | 25 (43.1) | ||
 Rapid | 50 (37.9) | 29 (39.2) | 21 (36.2) | ||
Age (years, median [IQR]) | 61.00 [54.00, 68.00] | 63.00 [53.25, 69.00] | 60.00 [57.00, 63.00] | 0.182 | 0.217 |
Gender (male/female, %) | 123/9 (93.2/6.8) | 69/5 (93.2/6.8) | 54/4 (93.1/6.9) | 1.000 | 0.006 |
BMI (kg/m2, years, median [IQR]) | 23.59 [21.22, 26.23] | 23.72 [22.17, 26.26] | 23.51 [20.76, 26.23] | 0.301 | 0.001 |
Diabetes (no/yes, %) | 118/14 (89.4/10.6) | 67/7 (90.5/9.5) | 51/7 (87.9/12.1) | 0.843 | 0.084 |
Hypertension (no/yes, %) | 90/42 (68.2/31.8) | 51/23 (68.9/31.1) | 39/19 (67.2/32.8) | 0.986 | 0.036 |
Preoperative chemotherapy (no/yes, %) | 111/21 (84.1/15.9) | 63/11 (85.1/14.9) | 48/10 (82.8/17.2) | 0.896 | 0.065 |
Extra-vertebral bone metastasis (no/yes, %) | 62/70 (47.0/53.0) | 38/36 (51.4/48.6) | 24/34 (41.4/58.6) | 0.335 | 0.201 |
Viscera metastases (no/yes, %) | 102/30 (77.3/22.7) | 57/17 (77.0/23.0) | 45/13 (77.6/22.4) | 1.000 | 0.013 |
KPS (> 50/≤50, %) | 64/68 (48.5/51.5) | 38/36 (51.4/48.6) | 26/32 (44.8/55.2) | 0.569 | 0.131 |
Preoperative embolization (no/yes, %) | 121/11 (91.7/8.3) | 67/7 (90.5/9.5) | 54/4 (93.1/6.9) | 0.832 | 0.094 |
Surgical process (%) | 0.436 | 0.231 | |||
 Palliative decompression | 120 (90.9) | 67 (90.5) | 53 (91.4) | ||
 Partial resection of vertebrae | 5 (3.8) | 4 (5.4) | 1 (1.7) | ||
 En bloc resection of vertebrae | 7 (5.3) | 3 (4.1) | 4 (6.9) | ||
Surgical site (%) | 0.688 | 0.151 | |||
 Cervical and cervical thoracic | 7 (5.3) | 3 (4.1) | 4 (6.9) | ||
 Thoracic and thoracolumbar | 97 (73.5) | 54 (73.0) | 43 (74.1) | ||
 Lumbar and lumbosacral | 28 (21.2) | 17 (23.0) | 11 (19.0) | ||
Number of surgical segments (1/≧2, %) | 53/79 (40.2/59.8) | 33/41 (44.6/55.4) | 20/38 (34.5/65.5) | 0.319 | 0.208 |
Hypoalbuminemia (no/yes, %) | 110/22 (83.3/16.7) | 63/11 (85.1/14.9) | 47/11 (81.0/19.0) | 0.695 | 0.110 |
Thrombocytopenia (no/yes, %) | 129/3 (97.7/2.3) | 71/3 (95.9/4.1) | 58/0 (100.0/0.0) | 0.336 | 0.291 |
PT (< 12/≥12, %) | 108/24 (81.8/18.2) | 61/13 (82.4/17.6) | 47/11 (81.0/19.0) | 1.000 | 0.036 |
APTT (< 32/≥32, %) | 71/61 (53.8/46.2) | 41/33 (55.4/44.6) | 30/28 (51.7/48.3) | 0.806 | 0.074 |