Table 4. Multivariate Cox regression model for recurrence risk of EC according to each prognostic factor.

Characteristics		HR	95% CI	p-value
Age ≥50 yr		1.47	1.14–1.89	0.003
Assessment of lymph node		1.07	0.82–1.39	0.365
Adjuvant therapy*		23.90	18.12–31.51	<0.001
Postoperative HT		0.81	0.31–2.10	0.662
Type of HT
	Estrogen	0.78	0.31–1.96	0.602
	Estrogen plus progesterone	0.57	0.21–1.57	0.278
	Tibolone	0.88	0.34–2.29	0.795
	Progesterone	1.02	0.39–2.67	0.977

CI, confidence interval; EC, endometrial cancer; HR, hazard ratio; HT, hormone therapy.

^*Adjuvant therapy is chemotherapy (high-risk EC).