birth prevalence
The frequency of occurrence of a specific condition among newborns in a defined population, usually expressed per number of births.
Full Definition
Birth prevalence in newborn screening refers to the rate at which specific genetic or metabolic disorders occur in newborn populations, typically expressed as cases per 100,000 or per million births. This epidemiological measure is crucial for determining the cost-effectiveness of screening programs, establishing appropriate cutoff values, and allocating healthcare resources. Birth prevalence can vary significantly between populations due to genetic factors, carrier frequencies, and consanguinity rates. Accurate prevalence data is essential for calculating positive predictive values and designing effective screening strategies.
Usage
Usage note: Hyphenate when used as a compound modifier; express as a ratio (1 in X) or rate (per 100,000).
In Context
- "The birth prevalence of medium-chain acyl-CoA dehydrogenase deficiency is approximately 1 in 15,000 in this population." — epidemiological report
- "Updated birth prevalence data supported expansion of the screening panel to include additional lysosomal storage disorders." — program justification