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Table 2 Demographics

From: Improvements in blood transfusion management: cross-sectional data analysis from nine hospitals in Zhejiang, China

  2007 2011  
n = 6093 n = 9646 p value
Age (Year, mean ± SD) 50.7 ± 17.1 53.7 ± 16.5 <  0.001
Weight (Kg, mean ± SD) 59.0 ± 10.5 59.9 ± 10.6 <  0.001
Female (Count; %) 2531; 41.5% 4554; 47.2% <  0.001
ASA (Count; %)
 I 952; 15.6% 1299; 13.5% <  0.001
 II 3292; 54.0% 5516; 57.2% <  0.001
 III 1462; 24.0% 2050; 21.3% <  0.001
 IV-V 387; 6.4% 781; 8.1% <  0.001
General Anaesthesia (Count; %) 5388; 88.4% 8750; 90.7% <  0.001
Preoperative Anemia (Count; %) 2701; 44.3% 3831; 39.7% <  0.001
Emergency Case (Count; %) 1939; 31.8% 2456; 25.5% <  0.001
Surgery subspeciality (Count; %)    <  0.001
 General 1610; 26.4% 1935; 20.1% <  0.001
 Cardiovascular 310; 5.1% 647; 6.7% <  0.001
 Orthopedic 1954; 32.1% 3766; 39.0% <  0.001
 Neurosurgical 749; 12.3% 1305; 13.5% 0.013
 Othera 1470; 24.1% 1993; 20.7% <  0.001
Duration of Surgery (Min, mean ± SD) 180 ± 93.6 177 ± 97.2 0.096
Post-OR ICU Stay (%; Day; mean ± SD) 25%; 5 ± 7.0 27%; 6 ± 9.8 0.002
Hospital Stay (Day; mean ± SD) 27 ± 24.4 24 ± 19.9 <  0.001
In-hospital death (Count; %) 134; 2.2% 167; 1.7% 0.037
Comorbidities (Count; %)
 Hypertension 713; 11.7% 1931; 20% <  0.001
 Cardiovascular problems 212; 3.5% 366; 3.8% 0.164
 Chronic Obstructive Pulmonary Disease 115; 1.9% 188; 1.9% 0.417
 Diabetes 284; 4.7% 558; 5.8% 0.002
  1. aGynaecological, urological, otolaryngological, plastic, or thoracic