ClinicalTrials.gg
CompletedNCT03297944Updated Jan 29, 2020Results posted

Sedative-Anxiolytic Effects on Simulated Driving Performance

A Phase 4 interventional study of Alprazolam 2mg (2ALP/PLC) and Alprazolam 1mg (1ALP/PLC) in Psychomotor Impairment, sponsored by Marion Coe. Completed at 1 site in United States. Open to participants aged 18 Years to 50 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2020-01-29.

Sponsored by Marion Coe · Phase 4, Interventional, and Other

Phase
Phase 4
Study type
Interventional
Enrollment
15
Allocation
Not applicable
Ages
18 Years to 50 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 15 studies in Psychomotor Disorders with a site in United States — 5 open to participants now, 7 under way, none of them phase 3. Psychomotor Disorders · United States.

Started
2017
the only one that year
Phase 4
3 of 15
none open now
Registered
5th of 15
by date
Lead sponsor
1 of 15
Marion Coe

Among the 15 studies in Psychomotor Disorders with a site in United States, this one is the only one that started in 2017, is one of 3 in phase 4, and was the 5th registered.

Psychomotor Disorders

51 studies on the registry are indexed under Psychomotor Disorders; 8 are open to participants now.

Browse Psychomotor Disorders studies →

Open to participants now

5 of the 15 studies in Psychomotor Disorders with a site in United States are open now. Recruiting first, the newest first:

All 5 open studies →

A study can be open while its sites in United States have not opened yet or have stopped. Only those recruiting at a site in United States →

Who these studies take

Of the 6 Psychomotor Disorders studies recruiting now, none set no upper age limit and 5 stop at 75 or younger; 4 take children under 18; 1 takes healthy volunteers.

This study: 18 Years to 50 Years · all sexes · healthy volunteers too.

The full table on the hub →

This tab as a report to print or save as PDF → With an account.

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02

Study summary

This study evaluates the effect of anxiety drugs taken at night on the ability to drive a car the next day. Participants will receive alprazolam, placebo, or zolpidem at night before bed or in the morning before using a driving simulator to assess impairment.

03

Conditions studied

  • Psychomotor Impairment

Browse trials for

04

Who can participate

Ages eligible
18 Years to 50 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • valid driver's license
  • english-speaking and literate

Exclusion criteria

Exclusion Criteria:

  • using daily medication for chronic condition
  • acute narrow angle glaucoma
  • previous adverse experience with study drugs
  • experiences motion sickness in response to driving simulator
  • > 30
  • women who are pregnant, lactating, or planning on becoming pregnant
  • regular use of tobacco products
  • current substance use disorder
  • current ongoing psychiatric disorder
Terms in these criteria, in plain language(3)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

ECG (electrocardiogram)

A recording of the heart’s electrical activity, taken with stickers on the chest, arms and legs. It takes a few minutes and does not hurt.

05

Study design

Phase
Phase 4
Primary purpose
Other
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
15 participants (actual)

Study arms

  • Experimental
    All Participants

    All participants received each intervention with alprazolam, zolpidem and placebo.

    Drug: Alprazolam 2mg (2ALP/PLC) · Drug: Alprazolam 1mg (1ALP/PLC) · Drug: Alprazolam 0.5mg (0.5ALP/PLC) · Drug: Zolpidem 10mg (ZOL/PLC) · Drug: Placebo (PLC/PLC) · Drug: Alprazolam 1mg (PLC/ALC)

Interventions

  • DrugAlprazolam 2mg (2ALP/PLC)

    Drug page: Alprazolam

    2mg alprazolam administered at night, placebo administered in the morning.

  • DrugAlprazolam 1mg (1ALP/PLC)

    Drug page: Alprazolam

    1mg alprazolam administered at night, placebo administered in the morning.

  • DrugAlprazolam 0.5mg (0.5ALP/PLC)

    Drug page: Alprazolam

    0.5mg alprazolam administered at night, placebo administered in the morning.

  • DrugZolpidem 10mg (ZOL/PLC)

    Drug page: Zolpidem

    10mg alprazolam administered at night, placebo administered in the morning.

  • DrugPlacebo (PLC/PLC)

    Placebo administered at night, placebo administered in the morning.

  • DrugAlprazolam 1mg (PLC/ALC)

    Drug page: Alprazolam

    Placebo administered at night, 1mg alprazolam administered in the morning.

06

What researchers measure

Primary outcomes

  1. Standard Deviation of Lane Position (SLDP)

    Lane deviation (swerving) on a driving simulator. This is measured as the distance (cm) the driver deviates from the lane.

    Time frame: 16 hours

07

Results

Posted Jan 29, 2020

Participant flow

Participant flow — Overall Study
MilestoneAll Participants
Started15
2alp/plc15
1alp/plc15
0.5alp/plc15
Zol/plc15
Plc/plc15
Plc/alp15
Completed15
Not completed0

Outcome measures

PrimaryStandard Deviation of Lane Position (SLDP)

Lane deviation (swerving) on a driving simulator. This is measured as the distance (cm) the driver deviates from the lane.

Time frame:
16 hours
Reported as:
Mean · distance (cm)
Standard Deviation of Lane Position (SLDP)
distance (cm)All Participants
2ALP/PLC40.08 (28.1 to 68.1)
1ALP/PLC37.28 (28.0 to 54.9)
0.5ALP/PLC36.06 (27.6 to 53.7)
ZOL/PLC37.61 (28.3 to 65.6)
PLC/PLC36.30 (29.7 to 58.9)
PLC/ALP40.72 (28.5 to 68.7)

Adverse events

Collected over 16 hours. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
2ALP/PLC0/15 (0%)0/15 (0%)0/15 (0%)
1ALP/PLC0/15 (0%)0/15 (0%)1/15 (6.7%)
0.5ALP/PLC0/15 (0%)0/15 (0%)0/15 (0%)
ZOL/PLC0/15 (0%)0/15 (0%)2/15 (13.3%)
PLC/PLC0/15 (0%)0/15 (0%)0/15 (0%)
PLC/ALP0/15 (0%)0/15 (0%)0/15 (0%)
Most frequent other events
Most frequent other events
Event2ALP/PLC1ALP/PLC0.5ALP/PLCZOL/PLCPLC/PLCPLC/ALP
HeadacheGeneral disorders0/151/150/151/150/150/15
Stomach AcheGastrointestinal disorders0/150/150/151/150/150/15

Baseline characteristics

Age, Continuous
Age, Continuous(years)All Participants
Mean30.53 ± 8.18
Sex: Female, Male
Sex: Female, Male(Participants)All Participants
Female9
Male6
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)All Participants
Hispanic or Latino0
Not Hispanic or Latino15
Unknown or Not Reported0
Race (NIH/OMB)
Race (NIH/OMB)(Participants)All Participants
American Indian or Alaska Native0
Asian0
Native Hawaiian or Other Pacific Islander0
Black or African American1
White14
More than one race0
Unknown or Not Reported0
Region of Enrollment
Region of Enrollment(Participants)All Participants
United States15
08

Study locations

1 site
  • Center on Drug and Alcohol Research
    Lexington, Kentucky 40508, United States
09

References and documents

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: No

10

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Sep 2017 to primary completion in Oct 2018, 13 months.

Results were first posted in Jan 2020, 1 year 3 months after primary completion.

How these figures are worked out, and which studies are left out of them.

Registered
Sep 26, 2017
First posted
Sep 29, 2017
StartActual
Sep 15, 2017
Primary completionActual
Oct 25, 2018
CompletionActual
Oct 25, 2018
Results first posted
Jan 29, 2020
Last update
Jan 29, 2020
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jan 29, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT03297944
Lead sponsor
Marion Coe
Responsible party
Marion Coe (Doctoral Candidate, University of Kentucky) — Sponsor-investigator
First posted
Sep 29, 2017
Start date
Sep 15, 2017
Primary completion
Oct 25, 2018
Completion
Oct 25, 2018
Results posted
Jan 29, 2020
Last update
Jan 29, 2020

Study contacts

Marion Coe
principal investigator · University of Kentucky

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jan 2020. You cannot join it, but the record below documents what was studied.

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Discussion

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Studies of the drug tested here: Alprazolam

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