Intermediate
Technical
IVT
diagnostic concordance
The degree of agreement between different diagnostic assessments or between diagnoses made at different time points.
Full Definition
Diagnostic concordance refers to the level of agreement between psychiatric diagnoses, whether assessed by different clinicians, different diagnostic instruments, or at different time intervals. In psychiatric epidemiology, concordance studies are crucial for validating diagnostic criteria, assessing inter-rater reliability, and understanding diagnostic stability over time. Poor concordance may indicate inadequate diagnostic criteria, insufficient training, or genuine heterogeneity in clinical presentation.
Usage
Usage note: Often expressed as kappa coefficients or percentage agreement.
In Context
- "The study found 78% diagnostic concordance between psychiatrists and trained lay interviewers." — validation study results
- "Low diagnostic concordance between baseline and follow-up assessments raised questions about diagnostic stability." — longitudinal study discussion
Also known as
diagnostic agreement
inter-rater reliability
Contrasted with
diagnostic discordance
Don't confuse with
diagnostic validity
diagnostic reliability