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Table 1 Observed and expected rates and detection rates for MCI and dementia over time

From: Expected and diagnosed rates of mild cognitive impairment and dementia in the U.S. Medicare population: observational analysis

 

Observation window

2015–2017

2016–2018

2017–2019

Included beneficiaries

38,739,387

39,965,446

41,205,474

MCI

 Observed rate

0.012

0.014

0.015

 Expected rate

0.199

0.197

0.196

 Detection ratea

0.062

0.071

0.079

Dementia

 Observed rate

0.098

0.097

0.095

 Expected rate

0.090

0.088

0.086

 Detection ratea

1.086

1.093

1.104

  1. MCI Mild cognitive impairment
  2. aThe detection rate is the ratio of the observed to the expected rate, where the expected rate is computed based on a predictive model
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Alzheimer's Research & Therapy

ISSN: 1758-9193