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Data Documentation & Codebook

Welcome to the documentation site for the SEM cohort data platform. This site serves as a comprehensive codebook and guide to the datasets available in the SEM cohort.

The SEM cohort comprises 325,539 unique patients with 630,275 emergency department visits from January 1st, 2017 to December 31st, 2018 at eight EDs in the Skåne region of southern Sweden.

This documentation is organized into several sections:

Introduction

A comprehensive overview of the SEM cohort, including its purpose, population characteristics, and general structure of the data.

Data Documentation

Detailed documentation of all datasets and variables, organized by data source:

  • Emergency Department Data: Patient registry data from emergency departments
  • Intensive Care Registry: Data from ICU admissions
  • Melior EHR Data: Electronic health record data (pre, during, and post-SEM periods)
  • Radiology Data: Information from radiological examinations
  • National Registry Data: Data from Swedish national health and demographic registries

Documentation Articles

  • Emergency Department Data: Detailed information about ED data sources, including Patientliggaren and SVAR
  • Melior EHR Data: Overview of the electronic health record data, its temporal categories, and key variables
  • National Registry Data: Information about Swedish national registries used in the SEM cohort
  • References: Citations and literature related to the SEM cohort

Getting Started

If you’re new to the SEM cohort, we recommend starting with the Introduction to understand the overall data platform, then exploring specific data sources through the documentation articles.

For questions about specific variables or datasets, refer to the Data Documentation section.