MoM
Pronunciation: multiple of the MEE-dee-an
Also written as: MoM — Multiple of the Median
Multiple of the median, a statistical measure used to express prenatal screening results relative to population norms.
Full Definition
Multiple of the median (MoM) is a statistical unit used in prenatal screening to express individual test results as a ratio compared to the median value for the population at the same gestational age. A MoM of 1.0 represents the median value, while values above or below 1.0 indicate results higher or lower than the population median. MoM values allow standardization across different laboratories and gestational ages, making them essential for risk calculation algorithms. In prenatal screening, specific MoM ranges are associated with increased or decreased risk for chromosomal abnormalities and other conditions. Maternal weight, ethnicity, and other factors may require MoM adjustment.
Usage
Usage note: Capitalize when abbreviated; note singular 'median' not 'medians'.
In Context
- "AFP levels were reported as 2.5 MoM, indicating elevated risk for neural tube defects." — Screening report
- "All first-trimester markers fell within the normal MoM range of 0.5-2.0." — Laboratory interpretation