As data is not directly comparable to previous studies, it is also problematic to analyze development over time.

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Reconciliations from the non-GAAP financial measures to the most directly comparable GAAP financial measures are provided below following Selected Data and the financial statements.

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It is directly comparable with the current drive, particularly within the scientific community, towards open data and data-sharing.

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The results are not directly comparable with those of last year's list, both because we added a new type of data and because the Office of Management and Budget has reconfigured its metropolitan statistical areas. (To be considered a metro area, OMB requires at least one urbanized area of 50, 000 people.) Essex County, for example, wasn't even considered for a spot in the 2005 edition.

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