Objective To conduct a systematic review of studies reporting on the validity of International
Classification of Diseases (ICD) codes for identifying stroke in administrative data. Methods …

Background Though administrative databases are increasingly being used for research
related to myocardial infarction (MI), the validity of MI diagnoses in these databases has …

This study aimed to determine the prevalence of rheumatoid arthritis in the United States
(US) adult insured population from 2004 to 2014. This was an observational, retrospective …

Objective Heart failure (HF) is an important covariate and outcome in studies of elderly
populations and cardiovascular disease cohorts, among others. Administrative data is …

Objective Health administrative data can be a valuable tool for disease surveillance and
research. Few studies have rigorously evaluated the accuracy of administrative databases …

The prevalence and incidence of a disease are among the most fundamental measures in
epidemiology. Prevalence is a measure of the burden of disease in a population in a given …

Background We have previously validated administrative data algorithms to identify patients
with rheumatoid arthritis (RA) using rheumatology clinic records as the reference standard …

Aim of the study was to estimate the prevalence and incidence of rheumatoid arthritis (RA)
from an administrative cohort consisting of 2,268,514 males and 2,446,769 females, aged≥ …

Objective To determine recent trends in the rate and management of new cases of OA
presenting to primary healthcare using UK nationally representative data. Methods Using …

Background The primary approach for defining disease in observational healthcare
databases is to construct phenotype algorithms (PAs), rule-based heuristics predicated on …