Percent Change From Baseline in Sum of Products of Perpendicular Diameter

**Semantic type:** Quantitative Concept

**Definition:** The most recently recorded sum of products of perpendicular diameters minus the baseline sum of products of perpendicular diameters divided by the baseline sum of products of perpendicular diameters, multiplied by 100.

**Synonyms:** - PCBSPPD - Percent Change Baseline in Sum of PPD - Percent Change Baseline in Sum of PPD - Percent Change Baseline in Sum of PPD