(Pretty Darn Quick) PDQ-Evidence provides quick access to high quality health system and public health evidence. It includes systematic reviews and overviews of systematic reviews; primary studies included in those; and structured summaries. The connections between the documents make PDQ-Evidence very easy and quick to search. For example, each systematic review is linked to all of the studies included in the review, to overviews and policy briefs that include the review, and to other systematic reviews that include any of the same studies. There are over 14,000 records in PDQ-Evidence, including over 1500 systematic reviews that fulfil basic quality criteria.