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CompletedNCT01791348Updated Dec 4, 2013

The Test-retest Effect of the "d2 Test of Attention".

An interventional study of d2 test of attention in Cognition and Attention in Surgeons and Nurses, sponsored by Herlev Hospital. Completed at 1 site in Denmark. Open to participants aged 22 Years to 55 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2013-12-04.

Sponsored by Herlev Hospital · Not applicable and Interventional

Phase
Not applicable
Study type
Interventional
Enrollment
40
Allocation
Not applicable
Ages
22 Years to 55 Years
Sex
All
01

Study 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. 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.

02

Conditions studied

  • Cognition and Attention in Surgeons and Nurses
03

In context

Lead sponsor

Herlev Hospital is the lead sponsor of 195 studies on the registry; 25 are open to participants now.

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

04

Who can participate

Ages eligible
22 Years to 55 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • Nurses and surgeons at the department of Surgery, Herlev hospital. Age 22-55 years.

Exclusion criteria

Exclusion Criteria:

  • Known sleep disturbances and attentional deficits, previous use of the d2 test of attention, use of central stimulating drugs
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Study design

Phase
Not applicable
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
40 participants (actual)

Study arms

  • Other
    d2 test of attention

    Other: d2 test of attention

Interventions

  • Otherd2 test of attention
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What researchers measure

Primary outcomes

  1. Test score for the d2 test of attention

    Time frame: one year

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Study locations

1 site
  • Herlev Hospital, department of surgery
    Herlev, 2730, Denmark
08

References and documents

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 22593230 ↗
  • Bates 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 15147597 ↗
  • Schlosser 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 ↗
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Dec 4, 2013, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT01791348
Lead sponsor
Herlev Hospital
Responsible party
Ilda Amirian (MD, PhD student, Herlev Hospital) — Principal investigator
First posted
Feb 15, 2013
Start date
Mar 2013
Primary completion
Sep 2013
Completion
Sep 2013
Last update
Dec 4, 2013

Study contacts

Jacon Rosenberg, MD, professor, chief surgeon,
study chair · Herlev Hospital, department of surgery, Herlev, Denmark

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Dec 2013. You cannot join it, but the record below documents what was studied.

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