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QUOTA study


The QbTest Utility in Optimising Treatment for ADHD (QUOTA) study investigates how we might achieve the optimal medication dose for people with ADHD. 

Attention Deficit/Hyperactivity Disorder (ADHD) is a condition that affects 3-5% of young people under 18-years-old. Young people with ADHD have difficulties with attention, impulsivity and hyperactivity that make it harder for them to learn, form relationships and prepare for adulthood.

Medication has shown to be effective in reducing symptoms of ADHD when the individual is receiving the optimal dose. However, it can be challenging and time-consuming for clinicians to gather all the information they need from teachers and parents to support their decisions when deciding what is the optimal dose.

QbTest is a commercially available computer test that measures attention, impulsivity and activity; the core features of ADHD. Using QbTest alongside other clinical assessments may help clinicians decide on an optimal medication dose for children more quickly. 

The aim of the QUOTA study is to develop a standardised QbTest medication management protocol and to measure its feasibility and acceptability in a feasibility randomised controlled trial.

It is important that we develop new ways to improve the treatment of ADHD in order to reduce the frustration experienced by families which can arise when they do not see an improvement in ADHD symptoms for several months.

Research funding(s)

QUOTA is funded by the National Institute for Health Research – Research for Patient Benefit programme. 

Lead researcher(s)

The study is led by Dr Maddie Groom, Assistant Professor in the Division of Psychiatry & Applied Psychology, School of Medicine, University Of Nottingham. Dr Charlotte Hall is the Senior Research Fellow on the project. The team also consists of clinicians, world-leading academics, and patient and public members, and is supported by NIHR MindTech.

Contact for further information

This email address is being protected from spambots. You need JavaScript enabled to view it., principal investigator, on 0115 823 0267.

This email address is being protected from spambots. You need JavaScript enabled to view it., senior research fellow, on 0115 823 2438.


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This presents independent research funded by the National Institute for Health Research (NIHR) under its Research for Patient Benefit (RfPB) Programme (Grant Reference Number PB-PG-1215-20026). The views expressed are those of the author(s) and not necessarily those of the NHS, the NIHR or the Department of Health.