Table 4. The association between the reproductive factors and endometrial (pre)malignancy

Characteristics (N=164)	ORs	95% CI	P-value
Age (years)	1.01	0.96-1.06	0.69
Age at menopause (years)	1.07	0.96-1.19	0.189
Time since menopause (years)	0.99	0.95-1.04	0.89
Frequency of bleeding	0.73	0.43-1.22	0.173
Duration of bleeding (days)	1.02	1.01-1.03	<0.001
Number of liver births	0.79	0.66-0.95	0.009
Hypertension	0.75	0.36-1.66	0.436
Diabetes	0.55	0.18-1.70	0.273
Endometrial thickness (mm) (n=127)	1.08	1.01-1.16	0.0032
Abnormal intracavitary mass	9.12	4.09-20.33	<0.001