However, there are limitations to the validity and quality of data in psychiatric registries, including over-representation of severe cases or inpatient data, sparse clinical detail, exclusion of variables not available from all institutions reporting to the register, and insufficient linking to other registries such as cause of death (Munk-Jørgensen et al. 2014).
There is insufficient data on the registry to clarify this situation further.
Regarding UKA, due to the insufficient information in non-registry studies, it was not possible to pool age and sex and other confounding factors.
The incidence rates of type 2 diabetes in Philadelphia is likely to be conservative and underestimated because hospital registries are insufficient to identify all cases of type 2 diabetes and children with type 2 diabetes may not self-identify in schools (the secondary source of validation).
Siegel withdrew the challenges when the state declared the postal registry to be insufficient grounds to challenge voting rights.
Conventional, publicly available sources (European public assessment reports, journal publications, and registry reports) provide insufficient information on new drugs, especially on patient relevant outcomes in approved subpopulations.
Individuals became lost follow up due to different reasons: moving abroad or moving to an unknown destination or insufficient data of the population registries.
However, reporting is still insufficient in journal publications 4 5 12 13 and registry reports.
Though Korea has its own cancer registry, due to an insufficient amount of overall clinical information such as the comorbidities, use of the cancer registry data alone is not appropriate.
One-to-one matching was used because self-reported cocaine use was more common among younger subjects in the registry, and there were insufficient controls for successful age matching if a higher ratio was used.
