Table 4.
Descriptive surgical and clinical characteristics by duration of surgery.
| Characteristic | Surgery duration | Statistics | |
|---|---|---|---|
| ≤90 minutes | >90 minutes | ||
| Implant type, % (n) | All 5, Fisher's exact p < .001 | ||
| Sigma | 47.4% (27) | 37.2% (16) | Sigma versus AGC versus others |
| AGC | 43.9% (25) | 20.9% (9) | χ 2(2) = 16.0, p < .001 |
| Other implants: | 21.7% (5) | 78.3% (18) | Common versus uncommon |
| LCS | 35.7% (5) | 64.3% (9) | χ 2(1) = 15.2, p < .001 |
| Scorpio NRG | 0% (0) | 100% (5) | |
| NexGen | 0% (0) | 100% (4) | |
| Tourniquet use, % (n) | 24.6% (14) | 16.3% (7) | χ 2(1) = 1.01, p = .314 |
| Bleeding, mL, mean (SD) | 297 (142) | 401 (215) | t(98) = 2.93, p = .004 |
| Hemoglobin, mL | |||
| Preoperative, mean (SD) | 126.9 (11.4) | 132.6 (12.9) | t(98) = 2.34, p = .022 |
| Day 0 at 20:00, mean (SD) | 106.3 (11.9) | 108.1 (11.4) | t(98) = 0.78, p = .437 |
| Day 4, mean (SD) | 100.6 (13.7) | 98.2 (13.3) | t(98) = 0.88, p = .379 |
| Creatinine, Day 0 | 63.2 (13.3) | 67.3 (20.5) | t(98) = 1.20, p = .231 |
| C-reactive Protein, Day 0 | 4.23 (4.68) | 3.86 (6.29) | t(98) = 0.33, p = .742 |
| Days in hospital, mean (SD) | |||
| Preoperative | 6.7 (4.4) | 8.0 (3.6) | t(98) = 1.53, p = .128 |
| Postoperative | 8.9 (2.0) | 9.5 (2.9) | t(98) = 1.15, p = .255 |
| Total | 15.6 (4.1) | 17.4 (4.4) | t(98) = 2.14, p = .035 |
Note. Surgery duration did not differ by patient age or sex. Common implants were Sigma and AGC, and uncommon implants were LCS, Scorpio NRG, and NexGen.