Genetic Association of Interleukin-31 Gene Polymorphisms with Epithelial Ovarian Cancer in Chinese Population

Table 1

Descriptive characteristics of the epithelial ovarian cancer patients.

Variable	Value
Sample size
Mean age ± SD, range (years)	51.2 ± 9.6, 15–85
FIGO stage, number (%)
I	43 (10.44%)
II	48 (11.65%)
III	297 (72.09%)
IV	24 (5.83%)
Tumor grade, number (%)
G1	7 (1.70%)
G2	25 (6.07%)
G3	380 (92.23%)
Histological type, number (%)
Serous	333 (80.83%)
Clear cell	16 (3.88%)
Endometrioid	9 (2.18%)
Mucinous	9 (2.18%)
Mixed and other	45 (10.92%)