Table 2.
Univariate and multivariate logistic analysis of risk factors for blood transfusion after hip fracture surgery
| Univariate | Multivariate | |||
|---|---|---|---|---|
| OR (95% CI) | P | OR (95% CI) | P | |
| Age (year) | 1.07 (1.044-1.09) | < 0.01* | 1.03 (1.01-1.06) | 0.02* |
| Sex | ||||
| Female | Ref. | Ref. | ||
| Male | 0.53 (0.33-0.84) | 0.01* | 1.08 (0.56-2.10) | 0.82 |
| BMI (kg/m2) | 0.90 (0.84-0.96) | < 0.01* | 0.92 (0.85-1.01) | 0.06 |
| Hb (g/L) | 0.92 (0.90-0.93) | 0.01* | 0.92 (0.90-0.94) | < 0.01* |
| TXA | ||||
| No | 2.28 (1.45-3.57) | < 0.01* | 1.92 (1.11-3.34) | 0.02* |
| Yes | Ref. | Ref. | ||
| Type of anesthesia | ||||
| GA | 1.28 (0.84-1.96) | 0.25 | 2.08 (1.21-3.57) | < 0.01* |
| CSEA | Ref. | Ref. | ||
| Waiting time (d) | 1.11 (1.01-1.21) | 0.04* | 0.93 (0.82-1.04) | 0.19 |
| Hypertension | ||||
| No | Ref. | Ref. | ||
| Yes | 1.33 (0.86-2.05) | 0.19 | 1.14 (0.66-1.96) | 0.65 |
| Diabetes | ||||
| No | Ref. | Ref. | ||
| Yes | 1.79 (1.07-2.97) | 0.03* | 1.55 (0.83-2.92) | 0.17 |
| Smoking | ||||
| No | Ref. | Ref. | ||
| Yes | 0.49 (0.26-0.92) | 0.03* | 0.55 (0.22-1.41) | 0.22 |
| Alcohol | ||||
| No | Ref. | Ref. | ||
| Yes | 0.60 (0.33-1.08) | 0.09 | 1.10 (0.45-2.73) | 0.83 |
| Surgical approach | ||||
| HA | Ref. | Ref. | ||
| IF | 0.92 (0.56-1.52) | 0.75 | 1.62 (0.45-5.78) | 0.46 |
| Type of fracture | ||||
| FNF | Ref. | Ref. | ||
| ITF | 0.62 (0.38-1.02) | 0.06 | 0.51 (0.14-1.85) | 0.30 |
Abbreviations: BMI body mass index, Hb hemoglobin, TXA tranexamic acid, GA general anesthesia, CSEA combined spinal and epidural anesthesia, HA hip arthroplasty, IF internal fixation, FNF femoral neck fracture, ITF inter-trochanteric fracture
*: Statistically significant difference