The simplest of these is to link with additional external information sources that record ethnicity, such as the National Breast Cancer Screening Service (NBSS), but the population coverage, completeness and accuracy of these data may also be limited.
All selected papers were assessed for the following: study design; adequate sampling (random or consecutive rather than convenience sampling); adequate description of population characteristics; completeness of information in the data sets; and use of a validated diagnostic method.
To estimate cancer population and completeness of cancer registry, we applied Mth models that rely on parameters that influence capture as time of capture (t) and individual heterogeneity (h) and compared results to the ones obtained with classical log-linear models and sample coverage approach.
In addition, although a common protocol was adopted, the aforementioned peculiarities affecting each SRS (e.g., population coverage, completeness of data, duplicate detection, drug and adverse event coding, possibility to access patient's medical history) did not allow final data aggregation.
With these data, we explore several issues related to the present-day candidate gene association study including the benefits of complete SNP discovery, the effects of tagSNP selection across diverse populations, and completeness of dbSNP for CRP.
Vital status was assessed via population registries (100%% completeness) and cause of death abstracted from death certificates obtained from the health offices.
The strengths of this study are its large size, population-representativeness, and completeness.
24 Comparing Guthrie and CHSP data, with their different collection methods, enabled us to assess completeness of population coverage.
Linear and squared terms of time trend were included to capture secular trends, including population growth, changes in completeness of ICD coding, and changes in diagnostic methods.
