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Finger length may hint at risk of smartphone addiction in young adults

NCT ID NCT07694960

Knowledge-focused Sponsor: Inonu University Source: ClinicalTrials.gov ↗

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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
Running, but no longer taking on new participants.
Completed This study
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 Results may not be published yet.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
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Expanded access (paused)
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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

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Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jul 10, 2026 · Last updated Jul 10, 2026

Summary

This observational study looks at whether the ratio of index to ring finger length and handgrip strength are linked to symptoms of problematic smartphone and internet use. Researchers measured these traits in 173 university students aged 17–26 from Turkish, Middle Asian, African, and Asian backgrounds. Participants completed surveys about their smartphone and internet habits. The goal is to better understand biological factors that might relate to addictive technology use.

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

173 people

The number who actually took part.

Started

Dec 2022

Finished

May 2023

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

University students aged 17-26 years from Turkish, Middle Asian, African, and Asian regional backgrounds studying at Bandırma Onyedi Eylül University.

Ages

17 to 26 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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: * University students aged 17-26 years. * Classifiable sex and regional-background information. * Ability to understand the study procedures. * Written informed consent provided. * For participants younger than the legal age of majority, additional parent or legal guardian consent obtained according to institutional requirements. Exclusion Criteria: * Previous finger operation. * Finger prosthesis. * Median, radial, or ulnar nerve deformity. * Carpal tunnel syndrome. * Developmental or mental disorder preventing participation or valid assessment.

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Conditions

The condition(s) this trial relates to.

Internet Addiction Disorder

As listed by the trial registrant

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

Healthy volunteers Internet addiction Problematic smartphone use

Contacts and locations

Locations

  • Bandırma Onyedi Eylül University

    Balıkesir, Turkey (Türkiye)

More trials for these conditions

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