Table 1.

Demographics of the study cohort (N = 5,697)

	Ovarian metastasis
Characteristic	Yes	No	p-value
Number	n = 70 (1.2%)	n = 5,627 (98.8%)
Year			0.30
2004	11 (1.1%)	995 (98.9%)
2005	20 (1.8%)	1,107 (98.2%)
2006	16 (1.4%)	1,131 (98.6%)
2007	13 (1.0%)	1,236 (99.0%)
2008	10 (0.9%)	1,158 (99.1%)
Age (years)	50.4 (±11.8)	48.1 (±12.0)	0.11
<40	13 (0.8%)	1,566 (99.2%)
40–49	18 (1.1%)	1,568 (98.9%)
≥50	39 (1.5%)	2,491 (98.5%)
Clinical stage			<0.001
IB1	21 (0.7%)	3,001 (99.3%)
IB2	8 (0.9%)	842 (99.1%)
IIA	7 (1.2%)	576 (98.8%)
IIB	34 (2.7%)	1,208 (97.3%)
Histology			<0.001
SCC	27 (0.7%)	3,683 (99.3%)
Adeno	36 (2.5%)	1,409 (97.5%)
AS	6 (1.3%)	464 (98.7%)
Others	1 (1.4%)	71 (98.6%)
Tumor size			<0.001
≤4 cm	27 (0.7%)	3,659 (99.3%)
>4 cm	35 (2.1%)	1,595 (97.9%)
Parametria			<0.001
Not involved	29 (0.6%)	4,548 (99.4%)
Involved	41 (3.7%)	1,077 (96.3%)
Deep stromal invasion			<0.001
Not involved	8 (0.3%)	2,532 (99.7%)
Involved	56 (1.9%)	2,847 (98.1%)
LVSI			<0.001
No	7 (0.3%)	2,450 (99.7%)
Yes	62 (2.0%)	3,004 (98.0%)
Uterine corpus			<0.001
Not involved	25 (0.5%)	4,861 (99.5%)
Involved	45 (5.7%)	741 (94.3%)
Pelvic lymph node			<0.001
Not involved	18 (0.4%)	4,164 (99.6%)
Involved	52 (3.5%)	1,426 (96.5%)
Para-aortic lymph node			<0.001
Not involved	10 (1.2%)	807 (98.8%)
Involved	16 (13.8%)	100 (86.2%)
Clinically not involved	44 (0.9%)	4,720 (99.1%)
Peritoneal cytology			<0.001
No	36 (0.8%)	4,280 (99.2%)
Yes	34 (2.5%)	1,338 (97.5%)

Mean (±SD) or number (%) per row is shown. Student’s t test or Fisher exact test, or χ² test for p-values. Significant p-values are emboldened.

Abbreviations: SCC: squamous cell carcinoma; Adeno: adenocarcinoma; AS: adenosquamous; LVSI: lympho-vascular space invasion.