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Research to investigate the reliability and validity of results in national tests, public examinations and other qualifications in England.
How to use a quasi-experimental study to evaluate your digital health product.
How to use a before-and-after study to evaluate your digital health product.
How to approach sampling ambient air and the sampling and analytical techniques to use.
Information on comparator products used in studies supporting abridged marketing authorisation application.
Statistics on provisional information about the reliability of journeys on Highways Agency roads in England.
How to use the good level of development (GLD) data tool to access the Compare your GLD data report.
Quarterly provisional statistics on reliability of journeys on Highways Agency roads in England.
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