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CompletedNCT03361579POLAPUpdated May 16, 2018

Pain Response to Open Label Placebo in Induced Acute Pain in Healthy Male Adults

An interventional study of Education in Acute Pain, sponsored by University Hospital, Basel, Switzerland. Completed at 1 site in Switzerland. Open to male participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2018-05-16.

Sponsored by University Hospital, Basel, Switzerland · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
35
Allocation
Randomized
Ages
18 Years and older
Sex
Male
01

Study summary

Open Label Placebo application has been shown to be effective in treatment of chronic pain (low back pain) and disease like the irritable bowel Syndrome. Data about effects on acute pain are spare.

The study investigates the effect of an open-label Placebo (substance without a medical active component) application on acute pain, evoked via a artificial pain model in healthy male volunteers. 32 healthy male volunteers are recruited.

02

Conditions studied

  • Acute Pain

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Keywords

  • Placebo
03

In context

Acute Pain

908 studies on the registry are indexed under Acute Pain; 154 are open to participants now.

This study's enrollment of 35 is below the median of 87 across 759 interventional studies indexed under Acute Pain.

Browse Acute Pain studies →

Lead sponsor

University Hospital, Basel, Switzerland is the lead sponsor of 989 studies on the registry; 191 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
Male
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

  • Healthy male volunteers (American Society of Anaesthesiologist's Class I or II)
  • Body mass index between 18 and 25kg/m2
  • Able to understand the study and the NRS scale
  • Able to give informed consent

Exclusion criteria

Exclusion Criteria:

  • Recreational drug abuse
  • Regularly taking medication potentially interfere with pain sensation (analgesics, antihistamines and calcium and potassium channel blockers)
  • Neuropathy
  • Chronic pain
  • Neuromuscular or psychiatric disease
  • Known or suspected kidney or liver disease
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Crossover assignment
Masking
Double (Investigator, Outcomes assessor)
Enrollment
35 participants (actual)

Study arms

  • Other
    Placebo education group

    Prior to the intervention during the Placebo is given, the volunteer receives a detailed information about the effect and the strength of an open-label placebo. This education is performed via a slide show and a news report video. The important terms for Placebo analgesia: positive expectations, conditioning, communication are discussed

    Other: Education

  • Other
    Placebo non education group

    No detailed Information about open-label placebo prior to the intervention. The volunteer is told about the possible strength of the Placebo effect on pain directly before the application.

    Other: Education

Interventions

  • OtherEducation

    c.p. intervention description

06

What researchers measure

Primary outcomes

  1. Pain response measured by the Area under the Pain Curve (AUPC)

    Pain response measured by creating the Area under the Pain Curve (AUPC), using the numeric rating scale (NRS) from minute 30 to 100 during constant induced pain with electrical current at the forearm of the participant. Measuring of pain every 10 minutes from minute 30 to 100 (Minute 30,40,50,60,70,80,90, 100) in an experimental setting. Main comparison: The effect of open label placebo v.s. no treatment intervention

    Time frame: 30 minutes after baseline until 100 minutes after baseline

Secondary outcomes

  1. Differences in pain response measured by the AUPC due to education

    The pain response measured by the AUPC in participants received a detailed education about open label Placebo compared to those who received a short education direct prior to placebo administration.

    Time frame: 30 minutes after baseline until 100 minutes after baseline

  2. hyperalgesia

    Hyperalgesia will be measured analogously to the NRS

    Time frame: 100min

  3. Saliva cortisol concentration in μg/dL

    Saliva concentration of cortisol, will be measured 4 times: at baseline, 30, 60 and 100 minutes during pain induction

    Time frame: baseline until 100 min after baseline

  4. allodynia

    allodynia will be measured analogously to the NRS

    Time frame: 100minutes

07

Study locations

1 site
  • University Hospital Basel
    Basel, Canton of Basel-City 4031, Switzerland
08

References and documents

Study documents

  • Protocol and statistical analysis plan · Oct 27, 2017

Documents are hosted by the registry — open the source record to download them.

Individual participant data

Plan to share: Undecided

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Nov 2017 to primary completion in Mar 2018, 4 months.

Of 314 non-industry interventional studies with no phase under Acute Pain, half reached primary completion within 11 months of starting (the median), counting those still running; a quarter within 5 and three quarters within 22. This study's 4 months is below that.

Counting every sponsor, half of 318 studies reached it within 11 months; a quarter within 5 and three quarters within 22.

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

Registered
Nov 17, 2017
First posted
Dec 5, 2017
StartActual
Nov 11, 2017
Primary completionActual
Mar 30, 2018
CompletionActual
Mar 30, 2018
Last update
May 16, 2018
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 May 16, 2018, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03361579
Responsible party
Sponsor
First posted
Dec 5, 2017
Start date
Nov 11, 2017
Primary completion
Mar 30, 2018
Completion
Mar 30, 2018
Last update
May 16, 2018

Study contacts

Wilhelm Ruppen, PD
study director · Dep. Anesthesiology University Hospital Basel

Oversight

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

Not currently enrolling

This study is completed, as verified in May 2018. You cannot join it, but the record below documents what was studied.

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