Table 3. Univariable and multivariable analysis of association between clinicopathological factors and OS.
| Variable | Univariable analysis | Multivariable analysis | |||||
|---|---|---|---|---|---|---|---|
| HR | 95% CI | P value | HR | 95% CI | P value | ||
| Age, years | 1.03 | 0.99–1.08 | 0.1496 | – | – | – | |
| Gender (male vs. female) | 1.64 | 0.60–4.52 | 0.3381 | – | – | – | |
| Presentation (primary vs. recurrence) | 0.21 | 0.07–0.66 | 0.0071 | 0.17 | 0.04–0.68 | 0.0122 | |
| CR vs. TRL | 2.67 | 0.76–9.40 | 0.1262 | – | – | – | |
| Hemoglobin, g/dL (≥12.75 vs. <12.75)* | 0.40 | 0.14–1.13 | 0.0846 | – | – | – | |
| Albumin, g/dL (≥3.9 vs. <3.9)* | 0.24 | 0.07–0.82 | 0.0234 | – | – | 0.5771 | |
| Tumor size, cm (≥21 vs. <21)* | 0.89 | 0.34–2.32 | 0.8185 | – | – | – | |
| No. of tumors (unifocal vs. multifocal) | 0.39 | 0.14–1.12 | 0.0793 | – | – | – | |
| Resected organs | |||||||
| 1 vs. none | 3.21 | 0.62–16.61 | 0.1649 | – | – | – | |
| 2 vs. none | 7.37 | 1.56–34.78 | 0.0116 | – | – | 0.1478 | |
| ≥3 vs. none | 5.78 | 0.81–41.22 | 0.0798 | – | – | – | |
| Estimated blood loss, mL | 1.00 | 1.00–1.00 | <0.0001 | 1.00 | 1.00–1.00 | <0.0001 | |
| FNCLCC grade | |||||||
| II + III vs. I | 6.85 | 1.86–25.22 | 0.0038 | – | – | 0.1530 | |
| III vs. I + II | 7.57 | 2.31–24.80 | 0.0008 | 6.87 | 2.06–22.93 | 0.0017 | |
| Histologic subtype | |||||||
| DDLPS vs. WDLPS | 2.35 | 0.70–7.85 | 0.1647 | – | – | – | |
| CD classification (<3 vs. ≥3) | 0.41 | 0.14–1.17 | 0.0845 | – | – | – | |
| Length of hospital stay, days | 1.03 | 1.01–1.05 | 0.0008 | – | – | 0.1242 | |
*, median value. OS, overall survival; HR, hazard ratio; CI, confidence interval; CR, complete resection; TRL, total (ipsilateral) retroperitoneal lipectomy; FNCLCC, Fédération Nationale des Centres de Lutte Contre le Cancer; DDLPS, dedifferentiated liposarcoma; WDLPS, well-differentiated liposarcoma; CD, Clavein-Dindo.