Table 5.

Multivariable logistic regression for factors associated with late spontaneous miscarriage (n = 751)

Items	OR (95% CI)	P
Age	1.023 (0.971–1.078)	0.391
Age of spouse	1.023 (0.979–1.069)	0.315
Surgical intervention history
Uterine cavity procedure (Ref: No)	2.095 (1.112–3.949)	0.022*
Etiological factors
Cervix factors (Ref: No)	4.136 (1.012–16.90)	0.048*

*Statistical significance, P<0.05. CI: Confidence interval; OR: Odds ratio; Ref: Reference group.