Rising prevalence of vascular comorbidities in multiple sclerosis: validation of administrative definitions for diabetes, hypertension, and hyperlipidemia

Multiple Sclerosis : Clinical and Laboratory Research
Ruth Ann MarrieCIHR Team in Epidemiology and Impact of Comorbidity on Multiple Sclerosis

Abstract

Despite the importance of comorbidity in multiple sclerosis (MS), methods for comorbidity assessment in MS are poorly developed. We validated and applied administrative case definitions for diabetes, hypertension, and hyperlipidemia in MS. Using provincial administrative data we identified persons with MS and a matched general population cohort. Case definitions for diabetes, hypertension, and hyperlipidemia were derived using hospital, physician, and prescription claims, and validated in 430 persons with MS. We examined temporal trends in the age-adjusted prevalence of these conditions from 1984-2006. Agreement between various case definitions and medical records ranged from kappa (κ) =0.51-0.69 for diabetes, κ =0.21-0.71 for hyperlipidemia, and κ =0.52-0.75 for hypertension. The 2005 age-adjusted prevalence of diabetes was similar in the MS (7.62%) and general populations (8.31%; prevalence ratio [PR] 0.91; 0.81-1.03). The age-adjusted prevalence did not differ for hypertension (MS: 20.8% versus general: 22.5% [PR 0.91; 0.78-1.06]), or hyperlipidemia (MS: 13.8% versus general: 15.2% [PR 0.90; 0.67-1.22]). The prevalence of all conditions rose in both populations over the study period. Administrative data are a valid means of ...Continue Reading

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Citations

Aug 3, 2013·Journal of Neurology·Agnès FromontThibault Moreau
Feb 8, 2013·BMC Neurology·Ruth Ann MarrieUNKNOWN CIHR Team in the Epidemiology and Impact of Comorbidity on Multiple Sclerosis
Feb 8, 2014·Cellular and Molecular Life Sciences : CMLS·Vladimir V Bamm, George Harauz
Nov 22, 2013·The Canadian Journal of Neurological Sciences. Le Journal Canadien Des Sciences Neurologiques·Ruth Ann MarrieUNKNOWN CIHR Team in the Epidemiology and Impact of Comorbidity on Multiple Sclerosis
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Jan 28, 2015·Multiple Sclerosis : Clinical and Laboratory Research·Ruth Ann MarrieNadia Reider
Dec 20, 2015·Multiple Sclerosis : Clinical and Laboratory Research·Neda RazazHelen Tremlett
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