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       <dc:date>2026-07-27T17:09:00+00:00</dc:date>
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        <dc:date>2026-07-23T09:50:19+00:00</dc:date>
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        <title>ruff_figural_fluency_test - [Background] </title>
        <link>http://wiki.lifelines.nl/doku.php?id=ruff_figural_fluency_test&amp;rev=1784800219&amp;do=diff</link>
        <description>Ruff Figural Fluency Test

The Ruff Figural Fluency Test (RFFT) (section: mental health) was measured in all Lifelines participants aged 18 years and older during:

	*  1A Visit 1 (n = ~91.000)
	*  3A Visit 1
	*  4A Visit 1

Background

The RFFT is a measure of nonverbal fluency, a parameter of executive cognitive functioning (</description>
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        <dc:date>2026-07-21T11:16:16+00:00</dc:date>
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        <title>omics_studies_overlap - [Table] </title>
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        <description>Overlap between studies
 Study name             CytoSNP (GWAS)   GSA (UGLI1)   Affymetrix (UGLI2+3)   DEEP    DAG3    CytoSNP (GWAS)         ~13800           ~900                                 ~850            GSA (UGLI1)</description>
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        <dc:date>2026-07-14T13:05:03+00:00</dc:date>
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        <title>3a</title>
        <link>http://wiki.lifelines.nl/doku.php?id=3a&amp;rev=1784034303&amp;do=diff</link>
        <description>Assessment 3A

Assessment 3A or “Third Assessment” is the third general assessment of Lifelines.

Assessment 3A was performed between 2019 and 2023.

Assessment 3A was preceded by general assessment 1A and general assessment 2A, and is followed by general assessment</description>
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        <title>familial_diseases_other - [Table] </title>
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        <description>Familial diseases (other)

Not only the health of participants, but also their family history of diseases (section: Family health).

Note that in this case, “children” may or may not be Lifelines participants, as opposed to the questions regarding the health of child participants as answered by their parents in</description>
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        <description>Familial diabetes

Not only the health of participants, but also their family history of diseases (section: Family health). Additionally, several questions on familial diabetes have been included in the additional assessment MHDQ.

Note that in this case, “children” may or may not be Lifelines participants, as opposed to the questions regarding the health of child participants as answered by their parents in</description>
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        <title>familial_cancer - [Table] </title>
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        <description>Familial cancer

Lifelines assessed participants&#039; family history of cancer (section: family health).
 Questions English                                                                                                                                              Questions Dutch</description>
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        <dc:date>2026-07-06T14:21:46+00:00</dc:date>
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        <title>self-assessment_intermed - [Table] </title>
        <link>http://wiki.lifelines.nl/doku.php?id=self-assessment_intermed&amp;rev=1783347706&amp;do=diff</link>
        <description>Self-assessment (Intermed)

The Self-Assessment Questionnaire of INTERMED (IM-SA)  is an instrument to identify individual (complex) health care needs. This instrument assesses biopsychosocial complexity, health care needs and barriers to receive standard care.</description>
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        <dc:date>2026-07-06T14:20:39+00:00</dc:date>
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        <title>living_situation - [Table] </title>
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        <description>Living situation

The following questions were asked regarding the living situation of elderly participants (65+) during the general assessments and to adult and elderly participants (60-80 years old) during the additional assessment ACTQ.


Variables
 Label English</description>
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        <title>home_environment_general - [Table] </title>
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        <description>Home environment (general)

Participants were asked several questions regarding the environment at home (section: lifestyle &amp; environment).


Variables

General questions
 Label English</description>
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        <description>Treatment (general)

Lifelines participants were asked about the medical treatments they underwent in their lifetime, in addition to hospitalization, surgery, and medication (section: medical treatment).

In the context of the additional assessments DEPQ and DEAQ, the LIDAS  was sent to a subgroup of participants to collect information on depression and anxiety, among which treatment for mental disorders. Part of thse variables have been included in the</description>
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        <title>skin_conditions - [Table] </title>
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        <description>Skin conditions

AdultLifelines participants were asked whether they suffered from skin conditions such as eczema or psoriasis (section: Diseases &amp; symptoms).

Note questions on skin conditions were also a relatively large part of the additional questionnaire SKIQ (see below).

Note that Lifelines also assessed general</description>
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        <title>4a - [Release dates fourth assessment] </title>
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        <description>Assessment 4A

Assessment 4A or “Fourth Assessment” is the fourth general assessment of Lifelines.

Assessment 4A will be performed between 2024 and 2028.

Assessment 4A was preceded by general assessments 1A, 2A, and 3A.


For all participants, assessment 4A consists of the following elements:</description>
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