Why the study?
A large proportion of chronic conditions remain undiagnosed, and understanding how underdiagnosis varies across diseases and population groups over time is crucial to effectively allocate resources and target interventions.
Population
Adults in England with diabetes, hypertension, and depression from two national surveys between 2011 and 2019
Comparison
Diagnosed vs undiagnosed cases across 540 population segments
Design
Survey-based modelling and microsimulation study
Authors
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High underdiagnosis signals screening gaps in England; leaves open temporal trends and causal drivers across conditions.
The proportion of undiagnosed hypertension in England remained unchanged between 2011 and 2019, highlighting the need for improved case-finding strategies, particularly among younger men.
Barr et al. (2025) studied this question.
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