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• W2052336547 abstract "Health administrative data are increasingly used to examine disease occurrence. However, health administrative data are typically available for a limited number of years – posing challenges for estimating disease prevalence and incidence. The objective of this study is to estimate the prevalence of people previously hospitalized with an acute myocardial infarction (AMI) using 17 years of hospital data and to create a registry of people with myocardial infarction. Myocardial infarction prevalence in Ontario 2004 was estimated using four methods: 1) observed hospital admissions from 1988 to 2004; 2) observed (1988 to 2004) and extrapolated unobserved events (prior to 1988) using a back tracing method using Poisson models; 3) DisMod incidence-prevalence-mortality model; 4) self-reported heart disease from the population-based Canadian Community Health Survey (CCHS) in 2000/2001. Individual respondents of the CCHS were individually linked to hospital discharge records to examine the agreement between self-report and hospital AMI admission. 170,061 Ontario residents who were alive on March 31, 2004, and over age 20 years survived an AMI hospital admission between 1988 to 2004 (cumulative incidence 1.8%). This estimate increased to 2.03% (95% CI 2.01 to 2.05) after adding extrapolated cases that likely occurred before 1988. The estimated prevalence appeared stable with 5 to 10 years of historic hospital data. All 17 years of data were needed to create a reasonably complete registry (90% of estimated prevalent cases). The estimated prevalence using both DisMod and self-reported heart attack was higher (2.5% and 2.7% respectively). There was poor agreement between self-reported heart attack and the likelihood of having an observed AMI admission (sensitivity = 63.5%, positive predictive value = 54.3%). Estimating myocardial infarction prevalence using a limited number of years of hospital data is feasible, and validity increases when unobserved events are added to observed events. The back tracing method is simple, reliable, and produces a myocardial infarction registry with high estimated completeness for jurisdictions with linked hospital data." @default.
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• W2052336547 date "2007-07-24" @default.
• W2052336547 modified "2023-09-25" @default.
• W2052336547 title "How many people have had a myocardial infarction? Prevalence estimated using historical hospital data" @default.
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• W2052336547 doi "https://doi.org/10.1186/1471-2458-7-174" @default.
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