Variability in Parenteral Nutrition Use in US Children's Hospitals.

Background: The variability of parenteral nutrition (PN) use for pediatric inpatients is currently unknown. In this study, we aim to determine the variability in PN use in US children's hospitals and the association of PN initiation with inpatient PN use.

Methods: We performed a retrospective cohort study of children who received PN during an inpatient encounter in US children's hospitals.

Determination of Marital Status of Patients from Structured and Unstructured Electronic Healthcare Data.

Social Determinants of Health, including marital status, are becoming increasingly identified as key drivers of health care utilization. This paper describes a robust method to determine the marital status of patients using structured and unstructured electronic healthcare data from a single academic institution in the United States. We developed and validated a natural language processing pipeline (NLP) for the ascertainment of marital status from clinical notes and compared the performance against two baseline methods: a machine learning n-gram model, and structured data obtained from the electronic health record.