Hellenic Longitudinal Investigation of Aging and Diet
The main objectives of the Hellenic Longitudinal Investigation of Aging and Diet (HELIAD) are to investigate in the Greek population, associations between the Mediterranean-type diet and cognitive dysfunction/age-related neuropsychiatric diseases, and to estimate the prevalence and incidence of Alzheimer’s disease, other dementias, mild cognitive impairment, and other neuropsychiatric conditions of aging.
The study also ascertains several demographic, medical, social, environmental, clinical, nutritional, and neuropsychological determinants and lifestyle activities.
Overview
- Acronym
- HELIAD
- Investigators
-
- Contacts
-
General Design
- Study design
- Cohort
- Start - End Year
- 2011 -
- General Information on Follow Up (profile, frequency)
-
Follow-ups with face-to-face interviews at 3 year intervals.
- Recruitment Target
-
- Individuals
- Number of Participants
- 1,943
- Number of Participants with Biological Samples
- 1,386
Access
Availability of data and biosamples
| Possible Access to Data | |
| Possible Access to Biosamples | |
| Other |
|
Marker Paper
Dardiotis et al. The Hellenic Longitudinal Investigation of Aging and Diet (HELIAD): Rationale, study design, and cohort description. Neuroepidemiology, 2014;43:9-14.
PUBMED 24993387Timeline
Population
Selection Criteria
- Minimum age
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65
- Countries
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- Greece
- Territory
- Larissa and Marousi
- Supplementary Information about selection criteria
-
The study is conducted in Larissa , Thessaly, since 2009, and in Marousi, Athens, since 2013.
Sources of Recruitment
- General Population
-
- Selected sample
Sample Size
- Number of Participants
- 1,943
- Number of Participants with Biological Samples
- 1,386
Data Collection Events
| # | Name | Data sources | Data sources - Biosamples | Start | End |
|---|---|---|---|---|---|
| 0 | HELIAD - Baseline |
|
|
2011 | 2016 |
Participating Studies
| Acronym | Name | Study design | Countries |
|---|
Harmonization Initiatives Included
| Acronym | Name |
|---|
Datasets
| Name | Data Collection Events | Variables |
|---|
Areas of Information Collected
- Socio-demographic and economic characteristics
- Death
- Lifestyle and behaviours
- Physical measures and assessments
- Birth, pregnancy and reproductive health history
- Laboratory measures
- Perception of health, quality of life, development and functional limitations
- Cognition, personality and psychological measures and assessments
- Diseases
- Life events, life plans, beliefs and values
- Symptoms and signs
- Preschool, school and work life
- Medication and supplements
- Social environment and relationships
- Non-pharmacological interventions
- Physical environment
- Health and community care services utilization
- Administrative information
Variables Content Summary
Areas of Information Collected
Areas of Information Collected per per Population and Data Collection Event
Networks
| Acronym | Name | Harmonization Initiatives | Individual Studies |
|---|