Cognition and Attention in Surgeons and NursesNCT01791348
The Test-retest Effect of the "d2 Test of Attention".
A study testing d2 test of attention in people with Cognition and Attention in Surgeons and Nurses, run by Herlev Hospital at 1 site in Denmark.
Trial summary
The "d2 test of attention" has been used in studies regarding sleep deprivation due to night shifts in hospital staff, in order to determine whether sleep deprivation has an impact on performance. Read more about this study
- Who is it for?
- Ages 22 to 55 yearsHealthy volunteers can take part
- Conditions the study is for
- Cognition and Attention in Surgeons and Nurses
- What is being tested?
- d2 test of attention
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 40 participants
- Where
- 1 siteDenmark
- Study dates
- Mar 2013to Sep 2013
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 22 to 55 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- Nurses and surgeons at the department of Surgery, Herlev hospital. Age 22-55 years.
Who cannot join
- Known sleep disturbances and attentional deficits, previous use of the d2 test of attention, use of central stimulating drugs
Trial locations and contacts
1 site in 1 country.
About this study
Official title: The Test-retest Effect of the "d2 Test of Attention" - a Test for Concentration and Performance.
The "d2 test of attention" has been used in studies regarding sleep deprivation due to night shifts in hospital staff, in order to determine whether sleep deprivation has an impact on performance. However, by repeating the test there appears to be a test-retest effect, as the participants improve when performing the test more than once. The aim of this study is to determine, whether the "d2 test of attention" has a test-retest effect.
Read the detailed description
20 surgeons and 20 surgical nurses will be included in this study. They will be asked, after thorough instruction, to perform the d2 test of attention after a designed schedule. The participants will on day 1 and 2 perform the test 3 times consecutively at intervals of 5 minutes. On day 3, 4 and 5 the test will be repeated only once. After the 5th day follows a 7-day-break. On day 13 the test will again be performed once.
- Being tested
- d2 test of attention
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
d2 test of attentionOther
| Study group | Role | What they receive |
|---|---|---|
| d2 test of attention | Other | Not described Receives: Other: d2 test of attention |
What is being measured
The primary outcome is the main question the study is designed to answer.
Test score for the d2 test of attention
Measured: one year
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted15 Feb 2013 (estimated)
- Study startMar 2013
- Primary completionSep 2013
- Study completionSep 2013
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (3)Papers the sponsor has linked to this study.
- Other trials for Cognition and Attention in Surgeons and NursesStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 40 participants (actual)
Sponsor and investigators
- Lead sponsor
- Herlev Hospital
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Ilda Amirian, Herlev Hospital
- Investigators
- Jacon Rosenberg, MD, professor, chief surgeon,, Study chair, Herlev Hospital, department of surgery, Herlev, Denmark
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01791348
- Sponsor's protocol ID
- d2test_1234
- Status last verified
- Dec 2013
- First submitted
- 6 Feb 2013
- Last updated
- 4 Dec 2013
- Results posted
- No
- Data monitoring committee
- Yes
Publications
Niu SF, Chu H, Chen CH, Chung MH, Chang YS, Liao YM, Chou KR. A comparison of the effects of fixed- and rotating-shift schedules on nursing staff attention levels: a randomized trial. Biol Res Nurs. 2013 Oct;15(4):443-50. doi: 10.1177/1099800412445907. Epub 2012 May 15.
PubMed 22593230Bates ME, Lemay EP Jr. The d2 Test of attention: construct validity and extensions in scoring techniques. J Int Neuropsychol Soc. 2004 May;10(3):392-400. doi: 10.1017/S135561770410307X.
PubMed 15147597Schlosser K, Maschuw K, Kupietz E, Weyers P, Schneider R, Rothmund M, Hassan I, Bartsch DK. Call-associated acute fatigue in surgical residents--subjective perception or objective fact? A cross-sectional observational study to examine the influence of fatigue on surgical performance. World J Surg. 2012 Oct;36(10):2276-87. doi: 10.1007/s00268-012-1699-5.
PubMed 22752051
Study at a glance
From the registry record, last updated by the sponsor on 4 Dec 2013. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- The Test-retest Effect of the "d2 Test of Attention" - a Test for Concentration and Performance.
- ClinicalTrials.gov ID
- NCT01791348
- Acronym / sponsor ID
- d2test_1234
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 40 participants (actual)
- Lead sponsor
- Herlev HospitalUniversity, hospital or other
- Study start
- Mar 2013
- Primary completion
- Sep 2013 (actual)
- Study completion
- Sep 2013 (actual)
- First posted
- 15 Feb 2013 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The "d2 test of attention" has been used in studies regarding sleep deprivation due to night shifts in hospital staff, in order to determine whether sleep deprivation has an impact on performance. However, by repeating the test there appears to be a test-retest effect, as the participants improve when performing the test more than once. The aim of this study is to determine, whether the "d2 test of attention" has a test-retest effect.
Detailed description
20 surgeons and 20 surgical nurses will be included in this study. They will be asked, after thorough instruction, to perform the d2 test of attention after a designed schedule. The participants will on day 1 and 2 perform the test 3 times consecutively at intervals of 5 minutes. On day 3, 4 and 5 the test will be repeated only once. After the 5th day follows a 7-day-break. On day 13 the test will again be performed once.
Study design
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| d2 test of attention | Other | Other: d2 test of attention |
Who may qualify
- Ages
- 22 to 55 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (1 listed)
- Nurses and surgeons at the department of Surgery, Herlev hospital. Age 22-55 years.
Key exclusion criteria (1 listed)
- Known sleep disturbances and attentional deficits, previous use of the d2 test of attention, use of central stimulating drugs
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| d2 test of attention | Other | d2 test of attention |
Primary outcome
Test score for the d2 test of attention
Time frame: one year
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 4 Dec 2013.
- Background: PubMed 22593230Niu SF, Chu H, Chen CH, Chung MH, Chang YS, Liao YM, Chou KR. A comparison of the effects of fixed- and rotating-shift schedules on nursing staff attention levels: a randomized trial. Biol Res Nurs. 2013 Oct;15(4):443-50. doi: 10.1177/1099800412445907. Epub 2012 May 15.
- Background: PubMed 15147597Bates ME, Lemay EP Jr. The d2 Test of attention: construct validity and extensions in scoring techniques. J Int Neuropsychol Soc. 2004 May;10(3):392-400. doi: 10.1017/S135561770410307X.
- Background: PubMed 22752051Schlosser K, Maschuw K, Kupietz E, Weyers P, Schneider R, Rothmund M, Hassan I, Bartsch DK. Call-associated acute fatigue in surgical residents--subjective perception or objective fact? A cross-sectional observational study to examine the influence of fatigue on surgical performance. World J Surg. 2012 Oct;36(10):2276-87. doi: 10.1007/s00268-012-1699-5.
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Jacon Rosenberg, MD, professor, chief surgeon, study chair
Herlev Hospital, department of surgery, Herlev, Denmark
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing d2 test of attention in people with Cognition and Attention in Surgeons and Nurses, run by Herlev Hospital at 1 site in Denmark.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 4 Dec 2013. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Denmark. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Test score for the d2 test of attention (time frame: one year). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT01791348, which also lists 3 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 4 Dec 2013.