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Table 1 Demographics and Baseline Characteristics of All Patients

From: Development and validation of a novel predictive model and web calculator for evaluating transfusion risk after spinal fusion for spinal tuberculosis: a retrospective cohort study

Variables Non-transfused cohort Transfused cohort P value
Number of patients 96 56  
Age (years) 53.52 ± 17.80 (23, 83) 54.98 ± 17.41 (13, 84) 0.623
Sex (male/female) 50/46 31/25 0.696
Hypertension 40 (41.67%) 27 (48.21%) 0.057
Diabetes 15 (15.63%) 11 (19.64%) 0.526
Anticoagulant history 14 (14.58%) 17 (30%) 0.020
Paraplegia 0 3 (5.36%) 0.022
Length of hospitalization (days) 19.63 ± 5.98 (11, 34) 21.55 ± 5.16 (13, 37) 0.047
Time to definitive surgery (days) 12.29 ± 9.19 (2, 42) 12.86 ± 9.20 (2, 39) 0.715
Surgical duration (min) 214.38 ± 66.36 (95, 410) 243.27 ± 61.92 (95, 415) 0.009
IBL (ml) 596.98 ± 556.90 (100, 2500) 811.25 ± 493.22 (250, 3400) 0.018
Number of fused vertebrae    0.044
 1 42 (43.75%) 19 (33.93%)  
 2 30 (31.25%) 12 (21.43%)  
 ≥3 24 (25.00%) 25 (44.64%)  
P-PT (s) 12.37 ± 1.00 (10.30, 14.80) 12.36 ± 0.95 (10.90, 14.80) 0.949
P-APTT (s) 31.42 ± 4.79 (23.70, 41.50) 32.05 ± 5.56 (24.10, 52.00) 0.463
P-FBG (g/L) 3.39 ± 1.20 (0.71, 5.63) 3.24 ± 1.22 (0.82, 5.77) 0.472
P-Hb (g/L) 111.01 ± 11.06 (85, 133) 106.80 ± 9.37 (89, 132) 0.018
P-WBC (10^9/L) 6.64 ± 2.13 (2.69, 14.69) 6.80 ± 2.28 (3.12, 15.21) 0.680
P-PLT (10^9/L) 249.07 ± 52.81 (159, 363) 251.02 ± 78.38 (113, 413) 0.855
P-HCT (%) 35.17 ± 3.64 (25.2, 40.8) 34.13 ± 3.79 (24.0, 39.8) 0.096
P-MCV (fl) 86.95 ± 4.01 (79.90, 92.50) 85.98 ± 4.81 (74.50, 97.10) 0.182
P-MCH (pg) 27.59 ± 1.37 (25.5, 30.8) 27.06 ± 2.12 (22.1, 31.6) 0.065
P-MCHC (g/L) 332.75 ± 7.93 (315, 349) 329.68 ± 10.60 (304, 351) 0.044
P-RDWCV (%) 13.48 ± 0.46 (12.60, 14.50) 13.75 ± 1.29 (11.30, 18.00) 0.065
P-ALB (g/L) 38.59 ± 4.04 (29.80, 45.77) 37.02 ± 4.63 (22.25, 45.00) 0.030
P-ESR (mm/h) 33.82 ± 12.72 (11, 81) 37.79 ± 16.40 (8, 73) 0.099
P-CPR (mg/L) 33.93 ± 15.74 (3.00, 74.00) 35.80 ± 15.84 (4.86, 80.00) 0.482
Hospitalization expenses (RMB) 72,635.7 ± 31,245 (8168.86, 115,657.69) 122,083.9 ± 34,483.8 (63,959.12, 201,266.44) 0.000
Blood transfusion expenses (RMB) 0 2498.20 ± 1541.01  
  1. IBL Intraoperative blood loss, P-PT Preoperative prothrombin time, P-APTT Preoperative activated partial thromboplastin time, P-FBG Preoperative fibrinogen, P-Hb Preoperative hemoglobin, P-WBC Preoperative white blood cell, P-PLT Preoperative platelet, P-HCT Preoperative hematocrit, P-MCV Preoperative mean corpuscular volume, P-MCH Preoperative mean corpuscular hemoglobin, P-MCHC Mean corpuscular hemoglobin concentration, P-RDWCV Preoperative red cell volume distribution width coefficient variation, P-ALB Preoperative albumin, P-ESR Erythrocyte sedimentation rate, P-CPR Preoperative C reactive protein.