Table 5. Risk factors for PAS disorders in patients with placenta previa.

	B	Standard error	P	Exp (B)	95% Confidence interval of Exp (B)
					Lower limit	Upper limit
Age	0.039	0.038	0.311	1.039	0.965	1.120
Number of uterine cavity operations	0.293	0.223	0.189	1.341	0.866	2.076
Number of caesarean sections	-0.131	0.510	0.798	0.877	0.323	2.385
Placental attachment location	0.058	0.368	0.875	1.059	0.515	2.178
Placenta previa types	1.034	0.374	0.006	2.813	1.351	5.857
Frequency of abortion	0.302	0.213	0.157	1.352	0.890	2.055
Placenta attached to the incision site	2.102	0.699	0.003	8.184	2.082	32.179
Constant	-5.168	1.270	0.000	0.006