ST Segment Duration Aggregate

**Semantic type:** Quantitative Concept

**Definition:** An aggregate ST segment duration value based on the measurement of ST segment duration intervals from multiple beats within a single ECG. The method of aggregation, which can vary, is typically a measure of central tendency such as the mean. (CDISC)

**Synonyms:** - ST Segment Duration, Aggregate - ST Segment Duration, Aggregate - STSDURAG