Table 4.
Factors Associated With Total Volume of Intraoperative Blood Loss
| Total volume of intraoperative blood loss | Unadjusted P value | Adjusted P valuea | |
| Implant type, median (IQR) | 0.052 | 0.005 | |
| Stemless aTSA | 298.3 (212.6-402.8) | ||
| Short-stem aTSA | 359.7 (253.9-415.0) | ||
| Age, Spearman correlation | r = −0.060 | 0.503 | —b |
| Sex, median (IQR) | 0.031 | 0.001 | |
| Female | 299.7 (212.6-383.2) | ||
| Male | 357.2 (257.9-455.6) | ||
| BMI (Spearman correlation) | r = 0.089 | 0.312 | 0.041 |
| ASA, median (IQR) | 0.806 | —b | |
| 1-2 | 326.3 (229.2-412.1) | ||
| ≥3 | 323.0 (235.1-406.7) | ||
| ACCI (Spearman correlation) | r = 0.022 | 0.803 | —b |
| Prior ipsilateral arthroscopy (median (IQR)) | 0.631 | —b | |
| No | 318.7 (218.1-412.1) | ||
| Yes | 346.2 (266.0-402.2) | ||
| Hemovac use, median (IQR) | 0.074 | —b | |
| No | 274.8 (182.9-400.4) | ||
| Yes | 337.1 (237.8-412.1) | ||
| Transexamic acid use, median (IQR) | 0.704 | —b | |
| No | 299.6 (280.7-400.4) | ||
| Yes | 326.3 (225.5-412.0) | ||
| Anesthesia, median (IQR) | 0.441 | —b | |
| General alone | 246.9 (151.5-412.1) | ||
| General/regional | 326.3 (232.7-409.7) | ||
| Use of augmented polyethylene, median (IQR) | 0.344 | —b | |
| No | 312.9 (232.7-404.9) | ||
| Yes | 349.7 (221.8-460.6) | ||
| Surgical side, median (IQR) | 0.482 | —b | |
| Right | 318.1 (239.5-419.4) | ||
| Left | 325.4 (191.4-405.2) |
ACCI = age-adjusted Charlson Comorbidity Index, ASA = American Society of Anesthesiologists, IQR = interquartile range
a
Adjusted P values were obtained from nonparametric analysis of covariance. This analysis was based on the ranks of total volume of intraoperative blood loss.
b
Variables did not remain in the nonparametric analysis of covariance model at a 0.05 significance level.