Table 2 Univariable analysis of the risk factors of blood loss in total hip arthroplasty
Risk factors | HBL | P | DBL | P | TBL | P |
|---|---|---|---|---|---|---|
Median (IQR)/β (95% CI) | Median (IQR)/β (95% CI) | Median (IQR)/β (95% CI) | ||||
HIV status | 0.010 | 0.016 | 0.014 | |||
HIV− | 1668 (1000) | 400 (300) | 2107 (1177) | |||
HIV+ | 2150 (1065) | 650 (550) | 2626 (1239) | |||
Gender | 0.054 | 0.494 | 0.131 | |||
Men | 2083 (1012) | 400 (488) | 2546 (1157) | |||
Women | 1666 (1073) | 457 (388) | 2110 (1142) | |||
Hypertension | 0.798 | 0.158 | 1.000 | |||
Yes | 1859 (1113) | 500 (650) | 2230 (1088) | |||
No | 1889 (1077) | 400 (393) | 2194 (1183) | |||
Diabetes | 0.570 | 0.001 | 0.427 | |||
Yes | 2016 (1093) | 575 (490) | 2663 (1207) | |||
No | 1727 (1017) | 400 (388) | 2152 (1106) | |||
BMI group | 0.523 | 0.040 | 0.327 | |||
Low-weight | 2036 (706) | 465 (905) | 2501 (1455) | |||
Normal | 1708 (1019) | 400 (300) | 2107 (1152) | |||
Over-weight | 2200 (1473) | 700 (650) | 2663 (1149) | |||
Age | − 16.7 (− 30.9, − 2.5) | 0.022 | 1.2 (− 8.35, 10.8) | 0.802 | − 14.0 (− 32.6, 4.5) | 0.136 |
Hb | 12.6 (0.93, 24.3) | 0.035 | − 6.2 (− 13.9, 1.5) | 0.112 | 7.8 (− 7.5, 23.1) | 0.313 |
ALB | 109.8 (51.7, 167.9) | < 0.001 | 24.8 (− 16.8, 66.5) | 0.238 | 123.6 (47.5. 199.6) | 0.002 |
ESR | − 5.9 (− 17.3, 5.4) | 0.296 | − 4.6 (− 12.1, 3.0) | 0.229 | − 8.4 (− 22.9, 6.1) | 0.253 |
hs-CRP | − 10.8 (− 20.2, − 1.4) | 0.025 | − 2.4 (− 8.7, 4.0) | 0.460 | − 12.3, (− 24.4, − 0.2) | 0.046 |
Nutrition status | − 10.4 (− 220.5, 199.7) | 0.921 | 39.6 (− 86.1, 165.2) | 0.530 | 39.2 (− 227.5, 305.9) | 0.769 |
PT | 483.6 (− 240, 1207.0) | 0.162 | 53.5 (− 340.6, 447.6) | 0.762 | 573.1 (− 222.8, 1296.9) | 0.142 |
INR | 5135.0 (− 2938.2, 13,208.7) | 0.181 | 318.3 (− 4050.6, 4687.1) | 0.871 | 5463.5 (− 3145.2, 14,052.2) | 0.182 |
Fibrinogen | − 369.0 (− 1001.8, 263.8) | 0.216 | − 25.8 (− 362.4, 310.7) | 0.864 | − 394.8 (− 1067.6, 277.9) | 0.213 |
Platelet count | − 0.4 (− 3.9, 3.0) | 0.814 | − 1.1 (− 3.3, 1.1) | 0.332 | − 0.9 (− 5.3, 3.4) | 0.663 |