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Administrative data have some advantages over traditional
surveillance data sources.
Accordingly, there has been substantial research on using these data
for surveillance and health outcome studies (Blanchard et al., 1996;
Maskarinec, 1997; Cricelli et al., 2003).
However, because administrative data have not been
collected for purposes of research or
surveillance, there is a need to ensure that they are valid and
reliable.
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