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Trial registered on ANZCTR
Registration number
ACTRN12613000773730
Ethics application status
Approved
Date submitted
26/06/2013
Date registered
10/07/2013
Date last updated
10/07/2013
Type of registration
Retrospectively registered
Titles & IDs
Public title
Iron, Selenium, and Mood Study
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Scientific title
Associations between iron levels or selenium levels and mood in a young adult sample.
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Secondary ID [1]
282558
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NIL
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Universal Trial Number (UTN)
U1111-1143-4090
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Trial acronym
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
mood
289223
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depression
289224
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self-reported physical and cognitive function
289583
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Condition category
Condition code
Mental Health
289558
289558
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0
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Studies of normal psychology, cognitive function and behaviour
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Mental Health
289559
289559
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0
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Depression
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Diet and Nutrition
289913
289913
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0
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Other diet and nutrition disorders
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Intervention/exposure
Study type
Observational
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Patient registry
False
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Target follow-up duration
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Target follow-up type
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Description of intervention(s) / exposure
At the beginning of the study, participants attend a laboratory session and complete a questionnaire assessing demographics and depression status via the Center for Epidemiological Studies Depression Scale (CES-D). Each day for the next 13 days, participants complete over the Internet a daily diary survey that contains an 18-item measure of positive and negative mood (based on the circumplex model of emotion, Barrett & Russell, 1999) and several unstandardized measures of self-reported physical and cognitive function (e.g., perceived daily tiredness, feeling physically run down, difficulty concentrating). At the end of the 13-days, a blood sample is taken to analyse iron and selenium levels, which will be analysed in relation to CES-D scores, daily positive and negative affect, and daily physical and cognitive function.
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Intervention code [1]
287223
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Not applicable
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Comparator / control treatment
Not applicable - Observational Study
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Control group
Uncontrolled
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Outcomes
Primary outcome [1]
289654
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daily positive and negative mood, as measured by the 18-item circumplex measure of mood
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Assessment method [1]
289654
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Timepoint [1]
289654
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daily over the two-week period
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Primary outcome [2]
289655
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depression, as measured by the CES-D
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Assessment method [2]
289655
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Timepoint [2]
289655
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beginning of the two-week observational period
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Secondary outcome [1]
302961
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daily self-reported physical and cognitive function (unstandardized variables)
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Assessment method [1]
302961
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Timepoint [1]
302961
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daily over the two-week period
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Eligibility
Key inclusion criteria
Males or female young adults aged 18-25 years
Cellphone/internet access
Willingness to provide a blood sample
Enrolled as a student at the University of Otago part-time or full-time
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Minimum age
18
Years
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Maximum age
25
Years
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Sex
Both males and females
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Can healthy volunteers participate?
Yes
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Key exclusion criteria
Nil
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Study design
Purpose
Psychosocial
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Duration
Cross-sectional
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Selection
Defined population
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Timing
Both
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Statistical methods / analysis
Multiple regression to detect associations between iron status and primary outcomes and selenium status and primary outcomes
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Recruitment
Recruitment status
Recruiting
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Date of first participant enrolment
Anticipated
28/03/2011
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Actual
28/03/2011
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Date of last participant enrolment
Anticipated
2/08/2013
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Actual
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Date of last data collection
Anticipated
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Actual
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Sample size
Target
1000
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Accrual to date
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Final
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Recruitment outside Australia
Country [1]
5098
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New Zealand
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State/province [1]
5098
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Otago
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Funding & Sponsors
Funding source category [1]
287337
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Government body
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Name [1]
287337
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Health Research Council of New Zealand - Emerging Researcher First Grant
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Address [1]
287337
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PO Box 5541
Wellesley Street
Auckland 1141
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Country [1]
287337
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New Zealand
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Primary sponsor type
Individual
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Name
Dr Tamlin Conner
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Address
Department of Psychology
University of Otago
PO Box 56
Dunedin 9054
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Country
New Zealand
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Secondary sponsor category [1]
286083
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Individual
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Name [1]
286083
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Dr Anne-Louise Heath
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Address [1]
286083
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Department of Human Nutrition
University of Otago
PO Box 56
Dunedin 9054
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Country [1]
286083
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New Zealand
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Secondary sponsor category [2]
286084
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Individual
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Name [2]
286084
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Dr Lisa Houghton
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Address [2]
286084
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Department of Human Nutrition
University of Otago
PO Box 56
Dunedin 9054
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Country [2]
286084
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New Zealand
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Secondary sponsor category [3]
286085
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Individual
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Name [3]
286085
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Dr Jody Miller
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Address [3]
286085
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Department of Human Nutrition
University of Otago
PO Box 56
Dunedin 9054
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Country [3]
286085
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New Zealand
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Secondary sponsor category [4]
286086
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Individual
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Name [4]
286086
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Ms Aimee Richardson
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Address [4]
286086
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Department of Psychology
University of Otago
PO Box 56
Dunedin 9054
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Country [4]
286086
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New Zealand
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Ethics approval
Ethics application status
Approved
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Ethics committee name [1]
289312
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Human Ethics Committee
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Ethics committee address [1]
289312
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University of Otago
PO Box 56
Dunedin 9054
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Ethics committee country [1]
289312
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New Zealand
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Date submitted for ethics approval [1]
289312
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Approval date [1]
289312
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13/10/2010
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Ethics approval number [1]
289312
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10/177
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Summary
Brief summary
The purpose of this project is to determine whether two micronutrients - iron and selenium - each may be associated with differences in depression, mood, and self-reported physical and cognitive function among a sample of young adults in New Zealand. In this study, mood and self-reported physical and cognitive function will be tracked using computerised daily diaries for 13 days. This is a more sensitive measure of symptom tracking that has not yet been used in the previous research on these micronutrients. Depression will also be assessed using the CES-D. Studies have found that iron deficiency anaemia is associated with increased fatigue and higher depression. However, it is not clear whether iron deficiency without anaemia is associated with these factors. Studies have also found that reduced selenium levels are associated with increased depressive symptoms. New Zealand has low levels of selenium in the soil, particularly in Otago where the study participants are based. Studies examining the association between selenium and depression or mood in a New Zealand sample are limited.
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Trial website
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Trial related presentations / publications
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Public notes
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Contacts
Principal investigator
Name
40278
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Dr Tamlin Conner
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Address
40278
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Department of Psychology
University of Otago
PO Box 56
Dunedin 9054
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Country
40278
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New Zealand
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Phone
40278
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+6434797624
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Fax
40278
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Email
40278
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[email protected]
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Contact person for public queries
Name
40279
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Dr Tamlin Conner
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Address
40279
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Department of Psychology
University of Otago
PO Box 56
Dunedin 9054
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Country
40279
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New Zealand
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Phone
40279
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+6434797624
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Fax
40279
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Email
40279
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[email protected]
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Contact person for scientific queries
Name
40280
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Dr Tamlin Conner
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Address
40280
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Department of Psychology
University of Otago
PO Box 56
Dunedin 9054
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Country
40280
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New Zealand
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Phone
40280
0
+6434797624
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Fax
40280
0
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Email
40280
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[email protected]
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No information has been provided regarding IPD availability
What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
Documents added manually
No documents have been uploaded by study researchers.
Documents added automatically
Source
Title
Year of Publication
DOI
Embase
Higher body iron is associated with greater depression symptoms among young adult men but not women: Observational data from the daily life study.
2015
https://dx.doi.org/10.3390/nu7085270
N.B. These documents automatically identified may not have been verified by the study sponsor.
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