Embodiments of the present disclosure relate an ovarian characteristic measurement method and system. A data interface is configured to receive a set of reproductive health data of a patient. The reproductive health data is processed using an ovarian characteristic data structure stored in memory. The data structure is generated from an ovarian characteristic data model that defines the ovarian characteristic. For instance, the data model defines a processing of the reproductive health data to yield a measurement of the ovarian characteristic. Accordingly, a format of the ovarian data structure is selected to optimize computing resources required to process the set of reproductive health data. The method and system then determine a value of the ovarian characteristic of the patient based on the processing of the set of reproductive health data.