Study nurses helped gathering missing information from CRFs and made follow-up phone calls; Clinical research assistants were responsible for centres set-up, monthly visits to intervention centres, completeness audit, database management and centres closures.
The clinical research unit facilitated the conduct of the trial through an effective logistical coordination: Study nurses helped gathering missing information from CRFs and made follow-up phone calls; Clinical research assistants were responsible for centres set-up, monthly visits to intervention centres, completeness audit, database management and centres closures.
Based on the overall high level of correctness and completeness the database was considered useful for research purposes.
Based on the overall high level of correctness and completeness the database was considered useful for research purposes, with the caveat that diseases of the respiratory system appeared to lack completeness of transfer of diagnostic information data to the CCR.
Our study used UK PCDs, which are generally acknowledged to be of higher quality and completeness than databases available for most countries, and we would urge researchers in other countries to undertake similar comparison studies.
Our assessment is that Pathoscope is confused by the lack of completeness of databases combined with the absence of an 'unknown' category, which prevents it from dealing with these unassigned reads sensibly.
Once a year, a structured audit is conducted where the completeness of the database is assessed (ie, the number of persons in the database with stroke/the number of persons with stroke admitted to hospital).
In this thesis we describe how we attacked these challenges by developing statistical tools that enable users and systems developers to reason about query completeness in hybrid database systems, as well as combining human and automated processing in search engines.
