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"Nellis, Robert Christopher"
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Novel linkage of the Society of Thoracic Surgeons database and hospital electronic health records
Society of Thoracic Surgeons Congenital Heart Surgery Database is the largest congenital heart surgery database worldwide but does not provide information beyond primary episode of care. Linkage to hospital electronic health records would capture complications and comorbidities along with long-term outcomes for patients with CHD surgeries. The current study explores linkage success between Society of Thoracic Surgeons Congenital Heart Surgery Database and electronic health record data in North Carolina and Georgia.
The Society of Thoracic Surgeons Congenital Heart Surgery Database was linked to hospital electronic health records from four North Carolina congenital heart surgery using indirect identifiers like date of birth, sex, admission, and discharge dates, from 2008 to 2013. Indirect linkage was performed at the admissions level and compared to two other linkages using a \"direct identifier,\" medical record number: (1) linkage between Society of Thoracic Surgeons Congenital Heart Surgery Database and electronic health records from a subset of patients from one North Carolina institution and (2) linkage between Society of Thoracic Surgeons data from two Georgia facilities and Georgia's CHD repository, which also uses direct identifiers for linkage.
Indirect identifiers successfully linked 79% (3692/4685) of Society of Thoracic Surgeons Congenital Heart Surgery Database admissions across four North Carolina hospitals. Direct linkage techniques successfully matched Society of Thoracic Surgeons Congenital Heart Surgery Database to 90.2% of electronic health records from the North Carolina subsample. Linkage between Society of Thoracic Surgeons and Georgia's CHD repository was 99.5% (7,544/7,585).
Linkage methodology was successfully demonstrated between surgical data and hospital-based electronic health records in North Carolina and Georgia, uniting granular procedural details with clinical, developmental, and economic data. Indirect identifiers linked most patients, consistent with similar linkages in adult populations. Future directions include applying these linkage techniques with other data sources and exploring long-term outcomes in linked populations.
Journal Article
The Genital Flora of Women with Intraamniotic Infection
The relationship of genital flora assessed at the end of the second trimester of pregnancy and intraamniotic infection diagnosed by clinical signs and symptoms during labor was evaluated. Women were enrolled at 23–26 weeks of gestation and followed through delivery in the multicenter Vaginal Infections and Prematurity Study (1984–1989). Among the cohort of 11,989 followed through delivery, 286 (2.4%) developed intraamniotic infection. The recovery of Gardnerella vaginalis (relative risk [RR] = 1.8; 95% confidence interval [CI] = 1.4–2.4), heavy growth of Bacteroides species (RR = 1.5; 95% CI = 1.1–2.1), and isolation of Mycoplasma hominis (RR = 1.7; 95% CI = 1.3–2.1) from the vagina at the end of the second trimester of pregnancy were associated with an increased risk of intraamniotic infection. Bacterial vaginosis was also associated with intraamniotic infection (RR = 1.5; 95% CI = 1.1–2.2). These findings extend prior studies by showing that prenatal cultures for .microorganisms associated with bacterial vaginosis predicted an increased risk of intraamniotic infection.
Journal Article