Table 1 clearly demonstrates the relationships of each method with respect to the sampling rate where we observe that for the proposed SS-MC method, increasing the sampling rate leads to lower processing time for both the single and the multiple source cases.
EUROCAT registries follow standardized guidelines and use multiple-source case ascertainment methods.
Use of multiple sources for case ascertainment was an improvement over previously used methods.
Registries use multiple sources of case ascertainment [ 10], and data quality is described and monitored by a series of data quality indicators [ 11].
We have used prospectively collected data from a long-standing, high quality register of congenital anomalies that uses multiple sources for case ascertainment.
The Western Australia Birth Defects Registry uses multiple sources of case ascertainment to identify BDs in live births, stillbirths, and pregnancies terminated with fetal abnormality.
The register uses multiple sources of case ascertainment from within the care pathway, including antenatal ultrasonography, antenatal screening, delivery reports, birth notifications, pathology, cytogenetics, clinical genetics, and paediatric surgery.
Multiple sources of case ascertainment for new-onset diabetes until the end of 2005 were as follows: self-report of doctor-diagnosed diabetes from the second health check or follow-up health and lifestyle questionnaires, self-report of diabetes-specific medication in either of the two follow-up questionnaires, or medication brought to the follow-up health check.
In addition, in multiple sound sources case, if we take all time delay combinations to estimate the sound source direction without sound velocity selection mechanism, the result becomes very poor.
