Table 3.
Univariate analysis of risk factors for allogenic blood transfusion (ABT) within 10 days from admission in 1,484 patients with hip fractures
| Variable | No ABT within 10 days | ABT within 10 days | P value | |
|---|---|---|---|---|
| Age at Admission (years) | 79.42 (11.4) | 83.36 (9.04) | <0.001* * | |
| Gender (Female/Male) | 59 %/41 % | 77 %/23 % | <0.001 § | |
| Surgery time (minutes) | 103.2 (25) | 109.8 (33) | <0.001* | |
| Time admission to surgery (hours) | 62.15 (77.65) | 54.17 (55.12) | ||
| Log | 3.74 (0.86) | 3.65 (0.81) | 0.038* | |
| Haemoglobin at admission (g/dL) | 13.17 (1.33) | 11.64 (1.52) | <0.001 * | |
| MCV at admission (fl) | 89.13 (5.2) | 88.88 (6.2) | 0.4* | |
| Creatinine at admission (mg/dL) | 1.19 (0.64) | 1.25 (0.54) | ||
| Log | 0.1 (0.32) | 0.15 (0.33) | 0.0026* | |
| INR at admission | 1.11 (0.47) | 1.14 (0.48) | 0.52¥ | |
| Type of implant | Hemiarthroplasty | 20.82 % | 18.19 % | <0.001 § |
| Cephalomedullary nail | 2.7 % | 9.1 % | ||
| Dynamic hip screw | 17.18 % | 32.01 % | ||
| Statins used (%) | 13.61 % | 19.74 % | 0.95§ | |
| Proton pump inhibitors used (%) | 14.62 % | 22.51 % | 0.42§ | |
| Diabetes mellitus drugs used (%) | 5.46 % | 8.89 % | 0.39§ | |
| Aspirin used (%) | 8.63 % | 12.8 % | 0.85§ | |
| Clopidogral used (%) | 1.62 % | 3.37 % | 0.13§ | |
MCV mean corpuscular volume, INR international normalised ratio
*Two sample t-test
¥Two sample wilcoxon test
§Chi-square test
The values are given as the mean and the standard deviation for continuous variables and as the number of patients, with the percentage in parentheses, for categorical variables