TABLE 4.

Multivariate logistic regression analysis of clinical factors associated with surgical intervention: results from models 1–3.

Clinical factors	Model 1 adjusted-OR (95% CI)	P-value	Model 2 adjusted-OR (95% CI)	P-value	Model 3 adjusted-OR (95% CI)	P-value
Age	1.02 (0.94–1.10)	0.98	1.02 (0.94–1.10)	0.662	1.00 (0.93–1.09)	0.917
Assisted reproductive technology	1.23 (0.51–3.05)	0.648	1.19 (0.48–2.98)	0.707	1.06 (0.42–2.7)	0.903
GnRH antagonist	0.20 (0.06–0.57)	0.002	0.23 (0.06–0.54)	0.002	0.20 (0.06–0.58)	0.003
RPOC size	–	–	1.01 (0.99–1.04)	0.299	1.01 (0.99–1.04)	0.341
Body mass index	–	–	–	–	1.04 (0.91–1.20)	0.527
Surgery for abortion	–	–	–	–	1.84 (0.71–5.07)	0.215

P-values < 0.05 are considered statistically significant. Adjusted-OR (95% CI): adjusted- odds ratio (95% confidential interval). Retained products of conception (RPOC) size shows the maximum diameter of retained products of conception after the initiation of treatment.