Date	Event	Description
29 June 2019	New search has been performed	Top‐up searches were performed for this review in December 2014, November 2015, October 2016 and August 2017. An update search was performed for this review on 28 June 2018 and 29 June 2019. Authors were contacted for further information as described. . Non‐pharmacological studies were not included in this update and will be the focus of a separate review. Feedback (from 2009) regarding error in interpretation of HYVET‐COG results incorporated into updated review. New studies included. New author added.
27 July 2009	Feedback has been incorporated	Further feedback from editor incorporated into updated review.
26 November 2008	New citation required and conclusions have changed	The authors have recommended that no further trials are conducted assessing the effect of antihypertensive interventions for cognition.
26 November 2008	New search has been performed	Update of search of February 2008 retrieved several studies for consideration by the authors: upon assessment, one new study has been included (HYVET 2008); there are now four studies included in the review, with a total of 15,936 participants. In addition, two new studies have been excluded.
8 February 2006	New citation required and conclusions have changed	Substantive amendment
30 September 2005	New search has been performed	Minor update