Table 3.

Results of the Generalized Least-Squares Model for Determining Attributable Costs of Surgical Site Infection and Endometritis After Low Transverse Cesarean Section (n = 1597)^a

Variable	Proportion of Patients	Estimated β Coefficient	SE	p
Variables of Interest
Surgical site infection	0.05	0.36	0.03	<0.001
Endometritis	0.08	0.39	0.03	<0.001
Demographics
Age < 18 years	0.05	0.06	0.03	0.088
Age > 35 years	0.13	0.04	0.02	0.106
Non-private insurance (Public aid, Medicare, Medicaid, or no health insurance)	0.60	0.02	0.02	0.192
Procedures
Labor induction	0.19	0.04	0.02	0.040
Ovarian procedure	0.01	0.26	0.08	0.002
Central venous catheterb	0.01	0.51	0.07	<0.001
Medical Conditions
Antepartum hemorrhage	0.03	0.09	0.04	0.032
Postpartum hemorrhage	0.04	0.10	0.04	0.008
Coagulation and hemorrhagic disorders	0.02	0.08	0.06	0.135
Chorioamnionitis	0.11	0.15	0.02	<0.001
Pelvic inflammatory disease	0.02	0.12	0.06	0.049
Gonorrhea or syphilis	0.01	0.13	0.07	0.060
Urinary tract or kidney infectionc	0.03	0.11	0.04	0.009
Pneumonia	0.01	0.37	0.07	<0.001
Pulmonary collapse or insufficienciesd	0.02	0.16	0.06	0.010
Maternal cardiac conditions	0.03	0.13	0.04	0.002
Diabetes mellitus or gestational diabetes	0.11	0.05	0.02	0.022
Pre-eclampsia (mild)	0.08	0.10	0.03	<0.001
Pre-eclampsia (severe)	0.09	0.23	0.03	<0.001
Eclampsia	0.01	0.62	0.08	<0.001
Multiple gestation	0.06	0.10	0.03	0.001
Obstetric laceration and/or trauma	0.02	0.20	0.06	0.001
Severe complication of delivery	0.02	0.53	0.06	<0.001
Fetal distress	0.43	0.02	0.02	0.149
Intrauterine fetal death	0.01	0.19	0.09	0.040

^aAdjusted R² = 0.24 for the model after accounting for natural log transformation of costs.

^bInserted before the onset of SSI and/or EMM in case patients.

^cDiagnosed on or after the day of cesarean section.

^dAtelectasis, pulmonary edema, acute respiratory distress syndrome, or respiratory failure.