Changes in medication safety indicators in England throughout the covid-19 pandemic using OpenSAFELY: population based, retrospective cohort study of 57 million patients using federated analytics.

Objective: To implement complex, PINCER (pharmacist led information technology intervention) prescribing indicators, on a national scale with general practice data to describe the impact of the covid-19 pandemic on safe prescribing.

Design: Population based, retrospective cohort study using federated analytics.

Setting: Electronic general practice health record data from 56.

COVID-19 Surveillance in a Primary Care Sentinel Network: In-Pandemic Development of an Application Ontology.

Background: Creating an ontology for COVID-19 surveillance should help ensure transparency and consistency. Ontologies formalize conceptualizations at either the domain or application level. Application ontologies cross domains and are specified through testable use cases.

Data quality of general practice electronic health records: the impact of a program of assessments, feedback, and training.

Objective: The aim of this study was to investigate the impact of a program of repeated assessments, feedback, and training on the quality of coded clinical data in general practice.

Design: A prospective uncontrolled intervention study was conducted in a general practice research network.

Measurements: Percentage of recorded consultations with a coded problem title and percentage of patients receiving a specific drug (e.