case prevalence
The proportion of identified cases within a defined population at a specific point in time or period.
Full Definition
Case prevalence represents the proportion of confirmed psychiatric cases within a clearly defined population during a specified time frame, distinguished from crude prevalence estimates that may include unvalidated cases. This measure requires rigorous case identification and diagnostic confirmation procedures, making it particularly valuable for clinical and epidemiological research. Case prevalence studies typically employ standardized diagnostic instruments and may involve multiple stages of case ascertainment to ensure accuracy. The measure is essential for healthcare planning and provides more reliable estimates than administrative data alone, though it may be resource-intensive to obtain.
Usage
Usage note: Emphasize the validated nature of cases when reporting this measure.
In Context
- "The case prevalence of bipolar disorder was determined through two-stage screening followed by clinical interview." — epidemiological study
- "Administrative records overestimated the true case prevalence due to diagnostic coding errors." — validation study