The data set includes up to 25 discharge diagnoses, and up to 25 procedures, coded using the International Classification of Diseases, Ninth check details Revision, Clinical Modification (ICD-9-CM). Data on the annual number of pregnancies, live births,

abortions, fetal deaths, and their related demographic characteristics were obtained from the Vital Statistics Annual Reports, compiled by the Center for Health Statistics at the Texas Department of State Health Services [15]. The TIPUDF is a publicly available, de-identified data set, and therefore this study was determined to be exempt from formal review by the Texas Tech Health Sciences Center Institutional Review Board. This article does not involve any new studies with human or animal subjects performed by any of the authors. Study Population Texas residents with pregnancy-related hospitalizations between 2001 and 2010 were identified using ICD-9-CM codes (Supplemental Appendix 1). Subsequently, an ICD-9-CM code 728.86 was used to identify patients with a primary or secondary diagnosis of NF. Data Collection Data were collected on patients’ age, race (categorized as non-Hispanic black [black], non-Hispanic white [white], Hispanic, and other), health insurance (categorized as private, Medicaid, uninsured,

and other), chronic comorbid conditions NVP-HSP990 mouse (based on the Deyo–Charlson index [16]), obesity, smoking, drug and alcohol Selleckchem Vorinostat abuse, other sites of infection (Supplementary Appendix 2), reported microorganisms (Supplementary Appendix 3), type and number of failing NCT-501 datasheet organs (Supplementary Appendix 4), admission to an intensive care unit (ICU), life-support interventions (mechanical ventilation, central venous catheterization, hemodialysis, and tracheostomy) (Supplementary Appendix 5), total hospital charges, hospital length of stay, and disposition at the end of hospitalization. Severity of illness was based on the number of failing/dysfunctional organs (organ failure [OF]), as modeled by the coding system reported by Lagu et al. [17]. Type of pregnancy-associated hospitalizations

were categorized into the following mutually exclusive, hierarchical groups, using pregnancy-associated ICD-9-CM codes: (a) fetal loss (pregnancies with abortive outcome, excluding induced abortion), (b) induced abortion (c), delivery (based on the approach described by Kuklina and colleagues [18]), (d) postpartum (hospitalizations with a an ICD-9-CM code for puerperal complications, without pregnancy-related diagnosis codes of groups a–c), and (e) antepartum (hospitalization with pregnancy-related diagnosis, but without pregnancy-related diagnosis codes of groups a–d). Outcomes The primary outcome was hospital mortality. Secondary outcomes included number and type of OF, resource utilization, and disposition among hospital survivors.