Table 3.
Factors Associated With Surgical Time
| Surgical Time (min) | Unadjusted P Value | Adjusted P Valuea | |
| Implant type, median (IQR) | <0.001 | <0.001 | |
| Stemless aTSA | 111 (96-130) | ||
| Short-stem aTSA | 137 (113-169) | ||
| Age (Spearman correlation) | r = −0.124 | 0.159 | —b |
| Sex, median (IQR) | 0.003 | <0.001 | |
| Female | 109.5 (93-137) | ||
| Male | 124 (111.5-145.5) | ||
| BMI (Spearman correlation) | r = −0.084 | 0.340 | —b |
| ASA, median (IQR) | 0.068 | —b | |
| 1-2 | 112.5 (97-133) | ||
| ≥3 | 123.5 (99.5-152.5) | ||
| ACCI (Spearman correlation) | r = −0.201 | 0.022 | 0.009 |
| Prior ipsilateral arthroscopy, median (IQR) | 0.943 | —b | |
| No | 117 (99-138) | ||
| Yes | 118.5 (92-158) | ||
| Transexamic acid use, median (IQR) | 0.238 | —b | |
| No | 108.5 (92-139) | ||
| Yes | 118.5 (98.5-139.5) | ||
| Anesthesia type, median (IQR) | 0.495 | —b | |
| General alone | 135.5 (98-138) | ||
| General/regional | 117 (98-139.5) | ||
| Use of augmented polyethylene, median (IQR) | 0.747 | —b | |
| No | 117 (97.5-139) | ||
| Yes | 118 (104-140) | ||
| Surgical side, median (IQR) | 0.083 | —b | |
| Right | 115 (97-133) | ||
| Left | 127 (98.5-149.5) |
ACCI = age-adjusted Charlson Comorbidity Index, ASA = American Society of Anesthesiologists, aTSA = anatomic total shoulder arthroplasty, IQR = interquartile range
a
Adjusted P values were obtained from nonparametric analysis of covariance. This analysis was based on the ranks of surgical time.
b
Variables did not remain in the nonparametric analysis of covariance model at a 0.05 significance level.