Table 3.
Univariate/multivariate analyses for false-positive 18F-FDG-PET/CT results.
| Univariate analysis | Multivariate analysis | ||||||
|---|---|---|---|---|---|---|---|
| Variables | Odds ratio | 95%CI | P-value | Odds ratio | 95%CI | P-value | |
| Cervical cancer | |||||||
| Age (years) | <50 | 1 | 1 | ||||
| ≥51 | 1.39 | 0.38–5.06 | 0.6193 | 2.52 | 0.55–12.96 | 0.2324 | |
| FIGO stage | IA-IIA | 1 | 1 | ||||
| IIB | 0.41 | 0.05–3.38 | 0.4067 | 0.20 | 0.01–1.79 | 0.1637 | |
| Histology | SCC | 1 | 1 | ||||
| Others | 0.66 | 0.18–2.44 | 0.5291 | 0.62 | 0.12–2.87 | 0.5439 | |
| Tumor size (mm) | <40 | 1 | 1 | ||||
| ≥40 | 2.22 | 0.54–8.36 | 0.2554 | 1.84 | 0.30–9.80 | 0.4875 | |
| WBC count (/μL) | <9000 | 1 | 1 | ||||
| ≥9000 | 14.45 | 3.53–59.16 | 0.0002 | 15.39 | 3.48–79.23 | 0.0004 | |
| Endometrial cancer | |||||||
| Age (years) | <50 | 1 | 1 | ||||
| ≥51 | 0.45 | 0.13–1.57 | 0.2107 | 0.59 | 0.10–3.41 | 0.5563 | |
| FIGO stage | IA-IIB | 1 | 1 | ||||
| IIIA-IVB | 2.84 | 0.87–9.32 | 0.0842 | 2.31 | 0.41–13.24 | 0.3451 | |
| Histology | EAC | 1 | 1 | ||||
| Others | 2.48 | 0.71–8.75 | 0.1565 | 4.11 | 0.80–21.10 | 0.0904 | |
| Peritoneal cytologya | Negative | 1 | 1 | ||||
| Positive | 1.34 | 0.34–5.30 | 0.6722 | 0.98 | 0.15–6.55 | 0.9831 | |
| WBC count (/μL) | <9000 | 1 | 1 | ||||
| ≥9000 | 25.34 | 6.82–94.14 | <0.0001 | 31.03 | 6.57–146.53 | <0.0001 | |
| Ovarian cancer | |||||||
| Age (years) | <50 | 1 | 1 | ||||
| ≥51 | 4.00 | 0.47–33.99 | 0.2042 | 5.62 | 0.42–75.29 | 0.1919 | |
| FIGO stage | IA-IIB | 1 | 1 | ||||
| IIIA-IVB | 1.84 | 0.43–7.86 | 0.4114 | 3.28 | 0.37–28.91 | 0.2839 | |
| Histology | SAC | 1 | 1 | ||||
| Others | 1.00 | 0.19–5.32 | 1.0000 | 3.27 | 0.31–34.05 | 0.3209 | |
| Peritoneal cytologya | Negative | 1 | 1 | ||||
| Positive | 1.79 | 0.40–7.94 | 0.4462 | 1.92 | 0.29–12.83 | 0.5010 | |
| WBC count (/μL) | <9000 | 1 | 1 | ||||
| ≥9000 | 19.29 | 3.79–98.07 | 0.0004 | 31.72 | 4.45–225.98 | 0.0006 | |
Statistical significance was assessed using multiple logistic regression analysis.
FDG fluorodeoxyglucose, PET positron emission tomography, CT computed tomography, FIGO International Federation of Gynecology and Obstetrics, SCC squamous cell carcinoma,
EAC endometrioid adenocarcinoma, SAC serous adenocarcinoma, WBC white blood cell.
aPeritoneal cytology was not indicated for 4 cases in endometrial cancer and 1 case in ovarian cancer.