Total | Not transfused | Transfused | P value | |
---|---|---|---|---|
Number of patients | 885 | 596 | 289 | |
Age (years) | 0.038 | |||
 < 60 | 339 (38.31%) | 249 (41.78%) | 90 (31.14%) | |
 ≧ 60 | 546 (61.69%) | 347 (58.22%) | 199 (68.86%) | |
Gender (%) | 0.312 | |||
 Male | 440 (49.718%) | 315 (52.852%) | 125 (43.253%) | |
 Female | 445 (50.282%) | 281 (47.148%) | 164 (56.747%) | |
Comorbidities | 0.057 | |||
 None (%) | 135 (15.254%) | 93 (15.604%) | 42 (14.533%) | |
 1–3 (%) | 543 (61.356%) | 352 (59.060%) | 191 (66.090%) | |
 ≧ 4 (%) | 207 (23.390%) | 151 (25.336%) | 56 (19.377%) | |
BMI (kg/m2) | 28.8 [26.6, 31.0] | 28.6 [26.4, 30.7] | 29.6 [26.9, 32.1] | 0.001 |
Smoker (%) | 0.323 | |||
 Yes | 256 (28.927%) | 79 (13.255%) | 177 (61.246%) | |
 No | 629 (71.073%) | 517 (86.745%) | 112 (38.754%) | |
ASA class (%) | < 0.001 | |||
 1 | 57 (6.441%) | 49 (8.221%) | 8 (2.768%) | |
 2 | 504 (56.949%) | 351 (58.893%) | 153 (52.941%) | |
 3 | 316 (35.706%) | 192 (32.215%) | 124 (42.907%) | |
 4 | 8 (0.904%) | 4 (0.671%) | 4 (1.384%) | |
Levels of fusion (%) | < 0.001 | |||
 1 | 344 (38.870%) | 301 (50.503%) | 43 (14.879%) | |
 2 | 184 (20.791%) | 146 (24.497%) | 38 (13.149%) | |
 ≧ 3 | 357 (40.339%) | 149 (25.000%) | 208 (71.972%) | |
Time to surgery (days) | 5.4 [4.6, 6.5] | 5.1 [4.3, 5.8] | 6.5 [5.4, 7.7] | < 0.001 |
Total intraoperative EBL (ml) | 357.9 [273.3, 512.0] | 320.3 [238.3, 390.7] | 857.3 [422.4, 956.1] | < 0.001 |
Operative time (min) | 191.2 [154.3, 235.9] | 181.0 [150.1, 210.5] | 249.4 [176.7, 344.0] | < 0.001 |
Previous transfusion (%) | 0.023 | |||
 Yes | 24 (2.712%) | 11 (1.846%) | 13 (4.498%) | |
 No | 861 (97.288%) | 585 (98.154%) | 276 (95.502%) | |
Previous surgery (%) | 0.211 | |||
 Yes | 74 (8.362%) | 45 (7.550%) | 29 (10.035%) | |
 No | 811 (91.638%) | 551 (92.450%) | 260 (89.965%) | |
Preoperative APTT | 31.4 [29.9, 33.0] | 31.3 [29.9, 32.9] | 31.6 [29.8, 33.6] | 0.091 |
Preoperative PT | 11.9 [11.1, 12.9] | 12.1 [11.2, 13.1] | 11.5 [10.8, 12.4] | < 0.001 |
Preoperative fibrinogen | 3.2 [2.7, 3.7] | 3.2 [2.7, 3.7] | 3.2 [2.6, 3.7] | 0.630 |
Preoperative platelet count | 249.9 [211.3, 297.5] | 248.3 [209.3, 298.9] | 253.7 [214.8, 293.6] | 0.861 |
Preoperative hematocrit | 35.5 [32.9, 37.8] | 36.4 [34.1, 38.6] | 33.2 [31.0, 35.9] | < 0.001 |
Preoperative Hb | 113.3 [106.2, 121.7] | 115.5 [107.9, 126.2] | 109.9 [104.2, 114.8] | < 0.001 |
Preoperative WBC | 7.21 [5.6, 8.7] | 7.2 [5.5, 8.6] | 7.3 [5.7, 8.7] | 0.733 |
LOS | 9.12[5.6, 8.7] | 7.13[4.90, 9.36] | 11.77[6.93, 15.61] | < 0.001 |