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The ARID study is a prospective cohort study of people who suffered an acute kidney injury (AKI) during a hospital stay.
The ARID study includes people who had a non-elective hospital stay, but did not suffer an AKI. This is to take account of the natural aging effect causing a reduction in kidney function in some people.
Recruitment to the ARID pilot study ran from November 2011 to January 2013 and the final data review after five years took place in November 2017. Work on the ARID pilot study is now closed. The main aim of this study was to identify whether a full study was viable. The ARID pilot study is therefore considered to be successful.
Recruitment to the ARID main study began in April 2013 and was closed in April 2016. The first year follow-ups were completed in January 2017.
Third year follow-ups were completed in January 2019. The test results were reviewed and the initial findings presented at medical conferences in the UK, Europe and the US during 2019.
Five year follow-ups started in February 2018 and are due to be completed by the end of December 2020. Over two thirds of the five year samples had been collected by March 2020 before work on the ARID Study was temporarily suspended due to the impact of COVID-19. ARID five year sample collection has re-started and we aim to finish sample collection in December 2020 as planned.
The complicated statistical analysis on the ARID Study findings will continue during 2020 and in 2021 for data from the five year follow-ups.