The search will focus on all major databases relevant to the subject matter: MEDLINE, EMBASE, PsychInfo, CINAHL, Proquest Nursing and Allied Health, ERIC, and Cochrane, and will include all years for the database, i.e., from the earliest data sources on each database, e.g., 1947 or earlier, and up to 2012.
For some earlier data sources, the quality of the data was unassessed and the data unused.
24 In the cases of drugs associated with multiple ATC codes, we examined the earliest available approval documents and other data sources to determine which code most closely corresponded to the indication associated with the initial US approval.
We refer readers to the earlier study for details on variable definitions from the QCEW and other data sources.
Prior to the molecular revolution, phylogenetic data were comparatively limited, with only morphology being generally available (ignoring early molecular data sources such as DNA-DNA hybridization or immunogenetic and serological data).
As discussed earlier, accessing data sources from adult healthcare facilities provide an opportunity to capture adolescents that may be admitted to an adult facility rather than a pediatric setting.
They demonstrated that ED surveillance had the potential to identify increases in disease incidence at the population level earlier than traditional surveillance data sources.
By keeping the set of indicators small and focused, and by clarifying data sources early on, this helped contribute to developing QA procedures that could, in fact, be implemented.
They refer to an earlier detection of cases analysing data sources in which (potential) influenza patients are registered earlier in the course of illness or treatment, as compared to traditional data collected later in the process by sentinel general practitioners or laboratories.
We collect data on changes in minimum early retirement age from several data sources, which include Fondazione Rodolfo Debenedetti (http://www.frdb.org), the OECD (2011) and Angelini, Brugiavini, and Weber (2009).
The analysis follows a similar method to our earlier studies using similar hospital data sources [ 22, 25, 26].
