Table 1 Univariate analysis of demographic features recorded in the electronic health record system.
Features | Surgical failure (n = 126) | Surgical success (n = 104) | P value |
|---|---|---|---|
(1) Age (Mean, SD) | 69.24 (12.19) | 68.08 (12.55) | 0.479 |
(2) Gender | Â | Â | 0.678 |
 Male (n, %) | 76 (60.3) | 59 (56.7) |  |
 Female (n, %) | 50 (39.7) | 45 (43.3) |  |
(3) Race | Â | Â | 0.066 |
 White (n, %) | 110 (87.3) | 99 (95.2) |  |
 Black (n, %) | 16 (12.7) | 5 (4.8) |  |
