Table 2 Cox proportional-hazard regression model analysis for PFS
Factors | Univariate analysis PFS | Multivariate analysis PFS | ||
|---|---|---|---|---|
HR (95%CI) | P value | HR (95%CI) | P value | |
Age | Â | Â | Â | Â |
 < 65 |  |  |  |  |
 ≥ 65 | 0.586 (0.257–1.339) | 0.205 |  |  |
Gender | Â | Â | Â | Â |
 Male |  |  |  |  |
 Female | 0.750 (0.387–1.456) | 0.395 |  |  |
Hemorrhage | Â | Â | Â | Â |
 No |  |  |  |  |
 Yes | 1.307 (0.662–2.579) | 0.441 |  |  |
Rupture | Â | Â | Â | Â |
 No |  |  |  |  |
 Yes | 1.157 (0.158–8.458) | 0.886 |  |  |
Resection style | Â | Â | Â | Â |
 Complete resection |  |  |  |  |
 Incomplete resection | 8.253 (3.561–19.044) | < 0.001 | 5.536 (2.298–13.339) | < 0.001 |
Tumor site | Â | Â | Â | Â |
 Stomach |  |  |  |  |
 Non-stomach | 2.516 (1.305–4.849) | 0.006 | 1.599 (0.788–3.243) | 0.194 |
Tumor size | Â | Â | Â | Â |
 < 5 cm |  |  |  |  |
 ≥ 5 cm | 1.937 (0.986–3.803) | 0.055 |  |  |
Mitotic index | Â | Â | Â | Â |
 < 5/HPF |  |  |  |  |
 ≥ 5/HPF | 3.820 (1.930–7.561) | < 0.001 | 2.833 (1.381–5.811) | 0.005 |
NIH risk grade | Â | Â | Â | Â |
 Extremely low or low |  |  |  |  |
 Moderate or high | 4.412 (1.831–10.630) | 0.001 | 1.954 (0.658–5.806) | 0.228 |
c-kit exons | Â | Â | Â | Â |
 Negative |  |  |  |  |
 Positive | 1.901 (0.978 –3.696) | 0.058 |  |  |
PDGFRA exons | Â | Â | Â | Â |
 Negative |  |  |  |  |
 Positive | 0.739 (0.178–3.079) | 0.678 |  |  |
Preoperative CA125 level | Â | Â | Â | Â |
 Normal |  |  |  |  |
 High | 2.268 (0.992–5.183) | 0.052 | 0.334 (0.076–1.475) | 0.148 |
Increased CA125 level both preoperative and postoperative | Â | Â | Â | Â |
 No |  |  |  |  |
 Yes | 6.616 (2.571–17.024) | < 0.001 | 5.884 (2.257–15.341) | < 0.001 |