Table 2.
Univariate and multivariate analysis results for risk factors of underdiagnosis by frozen section.
| Characteristic | n (%) | Univariate | Multivariate |
|---|---|---|---|
| Age | 1.000 | ||
| ≤40 years | 5 (53.1) | ||
| >40 years | 45 (46.9) | ||
| Menopausal status | 1.000 | ||
| Premenopausal | 65 (67.7) | ||
| Menopausal | 31 (32.3) | ||
| Nulliparous | 1.000 | ||
| Yes | 45 (46.9) | ||
| No | 49 (51.0) | ||
| NA | 2 (2.1) | ||
| CA125 | 0.006 | 0.085 | |
| ≤65.0 U/mL | 67 (69.8) | ||
| >65.0 U/mL | 20 (20.8) | ||
| NA | 9 (9.4) | ||
| CA19-9 | 0.020 | 0.192 | |
| ≤2000.0 U/mL | 63 (65.6) | ||
| >2000.0 U/mL | 3 (3.1) | ||
| NA | 30 (31.3) | ||
| CEA | 0.005 | 0.300 | |
| ≤4.6 U/mL | 41 (42.7) | ||
| >4.6 U/mL | 4 (4.2) | ||
| NA | 51 (53.1) | ||
| Type of surgery | 0.490 | ||
| Conservative | 55 (57.3) | ||
| Radical | 41 (42.7) | ||
| Bilateral tumors | 0.026 | 0.647 | |
| Present | 8 (8.3) | ||
| Absent | 88 (91.7) | ||
| Maximal tumor diameter | 0.269 | ||
| ≤10 cm | 28 (29.2) | ||
| >10 cm | 65 (67.7) | ||
| NA | 3 (3.1) | ||
| Ovarian endometriosis | – | ||
| Absent | 90 (93.8) | ||
| Present | 6 (6.3) | ||
| Number of frozen sections | 0.486 | ||
| ≤2 | 61 (63.5) | ||
| >2 | 33 (34.4) | ||
| NA | 2 (2.1) | ||
| Specific pathological features | 0.003 | 0.043 | |
| Absent | 82 (85.4) | ||
| Present | 14 (14.6) | ||
| NA | 0 (53.1) |
CA125, cancer antigen 125; CA19-9, carbohydrate antigen 19-9; CEA, carcinoembryonic antigen; NA, not available.