Background: Various data sources may be used to document the presence of chronic
medical conditions. This study examined the agreement between self-reported and health …

Objective The objective of this study is to describe agreement between administrative and
self-report data on the number and type of chronic conditions (CCs) and determine whether …

Background Health administrative data is increasingly being used for chronic disease
surveillance. This study explored agreement between administrative and survey data for …

Background Settings affect estimation of multimorbidity prevalence. Multimorbidity
prevalence was reported to be substantially higher among family practice-based patients …

Background Estimating multimorbidity (presence of two or more chronic conditions) using
administrative data is becoming increasingly common. We investigated (1) the concordance …

Background. Epidemiological surveys often rely on self-report as a measure of morbidity in a
population. However, these data can also be extracted from primary care records. Objective …

Background Researchers interested in multimorbidity often find themselves in the dilemma
of identifying or creating an operational definition in order to generate data. Our team was …

Background: Two common ways of measuring disease prevalence include:(1) using self-
reported disease diagnosis from survey responses; and (2) using disease-specific diagnosis …

Background Population health studies often use existing databases that are not necessarily
constituted for research purposes. The question arises as to whether different data sources …

Background Multimorbidity is common and associated with poor clinical outcomes and high
health care costs. Administrative data are a promising tool for studying the epidemiology of …