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A simple clock drawing may reveal hidden brain risks before surgery

NCT ID NCT03175302

Knowledge-focused Sponsor: University of Florida Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing This study
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Aug 17, 2026 · Last updated Aug 18, 2026 · Updated 1 time

Summary

This study looks at whether a digital version of the classic clock-drawing test can help identify older adults at higher risk for confusion or memory issues after surgery. Researchers will analyze data from thousands of patients aged 65 and older who take the test before an operation, using machine learning to spot patterns. The goal is to see if this quick screening tool can predict post-operative cognitive complications and guide better care.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
digital cognitive testing using a digital clock-drawing tool
What this could lead to
If successful, this could give doctors a simple, quick way to predict which older adults may face memory or thinking problems after surgery, allowing for better preparation and care.
What could go wrong
This is an observational study, so it cannot prove cause and effect. The digital test may not reliably predict real-world complications, and results may not apply beyond the specific hospital setting.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

About 25,240 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jun 2018

Expected to finish

May 2027

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

Patients \>/= 65 years of age scheduled for screening within the UF Health Preoperative clinic

Ages

65 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * \>/= 65 years of age * screening within the University of Florida (UF) Health Preoperative clinic * presurgical cognitive screening with the digital Clock Drawing Tool (dCDT) Exclusion Criteria: * \< 65 years of age * did not complete screening within the UF Health Preoperative clinic * did not complete the presurgical cognitive screening with the digital Clock Drawing Tool (dCDT)

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Conditions

The condition(s) this trial relates to.

cognitive disorder Cognitive Dysfunction

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Cognitive dysfunction

Contacts and locations

Locations

  • UF Health

    Gainesville, Florida, 32610, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.