Table IV.

Univariate and multivariate Cox regression analysis of ectopic pregnancy.

	Univariate		Multivariate
Factors	HR (95 CI%)	P-value	HR (95 CI%)	P-value
Age	1.549 (0.519-4.628)	0.438
Allergic reaction	0.553 (0.157-2.042)	0.372
Smoking history	1.008 (0.991-1.022)	0.368
Drinking history	0.564 (0.201-1.580)	0.276
Diet	2.748 (0.705-10.701)	0.143
History of genital surgery	1.406 (1.092-1.812)	0.043	1.138 (0.857-1.514)	0.022
History of salpingotomy	6.459 (1.408-29.575)	0.017	12.852 (2.297-71.238)	0.005
History of pelvic infection	6.108 (1.385-24.954)	0.018	2.601 (1.032-6.538)	0.041
History of lower abdominal surgery	2.270 (0.901-1.792)	0.175	-	-
History of ectopic pregnancy	0.292 (0.124-0.689)	0.005	0.357 (0.158-0.735)	0.013
PAPP-A	8.356 (2.128-3.846)	0.002	5.817 (2.157-15.756)	0.003

PAPP-A, pregnancy-associated plasma protein-A.