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Volume 7, Number 5—October 2001

Epidemiology of and Surveillance for Postpartum Infections

Deborah S. Yokoe*Comments to Author , Cindy L. Christiansen†, Ruth Johnson‡, Kenneth Sands§, James Livingston*, Ernest S. Shtatland†, and Richard Platt*†
Author affiliations: *Channing Laboratory and Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA; †Harvard Pilgrim Health Care, Boston, MA, USA; ‡Harvard Vanguard Medical Associates, Boston, MA, USA; §Beth Israel Deaconess Medical Center, Boston, MA, USA

Main Article

Table 2

Predictors of postpartum infection used in the logistic regression models

Variable Odds ratio 95% confidence interval
Model 1: Urinary tract infection, mastitis, surgical site infection or episiotomy site infection following cesarean or vaginal delivery
Cesarean section 1.21 0.59-2.47
Antistaphylococcal antibiotics 1.89 1.02-3.53
Rehospitalization within 30 days of delivery 3.23 1.32-7.91
Ambulatory diagnosis code for mastitis, urinary tract infection, or endometritis 5.70 2.97-10.95
Ambulatory blood or wound culture 5.85 1.97-17.84
Hospital or emergency department diagnosis code for mastitis, urinary tract infection, or other obstetrical complications 0
Model 2. Surgical site infections (including endometritis) following cesarean section
Ambulatory blood or wound culture 9.17 2.44-34.41
Ambulatory diagnosis code for endometritis or wound infection 0

*In the prediction model, any woman with one or more of these codes was given an automatic probability of infection of 1.0 to maintain stability of the model during bootstrap sampling.

Main Article

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