Additional data that has been collected on top of our own general assessments are becoming more and more available for researchers. This additional data could refer to 1) results from an additional questionnaire or assessment, 2) linked data from another data source, or 3) secondary variables generated by researchers. These additional datasets are often developed with the extensive effort, (financial) support, and specific expertise from external research groups and therefore require additional references when they are used in your publication. Publication of linked data may need to follow additional source specific publication guidelines. (All references on this page are cited using MLA referencing)

Additional collected questionnaire data

Autistic traits
-   Assessment code autq (see the autistic traits wiki page)
-   Required reference: for general use
        1. Warrier, Varun, et al. "Elevated rates of autism, other neurodevelopmental and psychiatric diagnoses, and autistic traits in transgender
        and gender-diverse individuals." Nature communications 11.1 (2020): 3959.
        For usage of autism-spectrum quotient (AQ):
        2. Baron-Cohen, Simon, et al. "The autism-spectrum quotient (AQ): Evidence from asperger syndrome/high-functioning autism, malesand
        females, scientists and mathematicians." Journal of autism and developmental disorders 31 (2001): 5-17.

Big data
-   Assessment code bigq (see the big data wiki page)
-   Required references: 
        1. Broekstra, Reinder, et al. "Motives for withdrawal of participation in biobanking and participants’ willingness to allow linkages of their
            data." European Journal of Human Genetics 30.3 (2022): 367-377. 
        2. ​​​​​​Broekstra, Reinder, et al. "Demographic and prosocial intrapersonal characteristics of biobank participants and refusers: the findings of
            a survey in the Netherlands." European Journal of Human Genetics 29.1 (2021): 11-19.

BIONIC
-   Assessment codes deaq and depq (see the bionic wiki page)
-   Required references: For usage of the LIDAS data
       1. Bot, M., et al. "Validity of LIDAS (LIfetime Depression Assessment Self-report): a self-report online assessment of lifetime 
           major depressive disorder." Psychological Medicine 47.2 (2017): 279-289.
       2. Fedko, Iryna O., et al. "Measurement and genetic architecture of lifetime depression in the Netherlands as assessed by LIDAS (Lifetime
           Depression Assessment Self-report)." Psychological Medicine 51.8 (2021): 1345-1354.
       For usage of the deaq questionnaire
       3. van Loo, Hanna M., Steven H. Aggen, and Kenneth S. Kendler. "The structure of the symptoms of major depression: Factor analysis of
           a lifetime worst episode of depressive symptoms in a large general population sample." Journal of Affective Disorders 307 (2022):
           115-124.

Blue light
-   Assessment code bluq (see the blue light wiki page)
-   Report providing additional information: van Kerkhof, L. W. M., et al. "Schermgebruik, blauw licht en slaap." (2019). https://doi.org/10.21945/RIVM-2018-0147

COVID-19
-   Assessment code covt (see the COVID-19 wiki page)
-   Required banner:
Lifelines Corona Research Initiative:
H. Marike Boezen†¹, Jochen O. Mierau^2,3,9, H. Lude Franke⁴, Jackie Dekens^4,6, Patrick Deelen⁴, Pauline Lanting⁴, Judith M. Vonk¹, Ilja Nolte¹, Anil P.S. Ori^4,5, Annique Claringbould⁴, Floranne Boulogne⁴, Marjolein X.L. Dijkema⁴, Henry H. Wiersma⁴, Robert Warmerdam⁴, Soesma A. Jankipersadsing⁴, Irene van Blokland^4,7, Geertruida H. de Bock¹, Judith GM Rosmalen^5,8, Cisca Wijmenga⁴.
¹ Department of Epidemiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
² Department of Economics, Econometrics & Finance, Faculty of Economics and Business, University of Groningen, Groningen, The Netherlands
³ Lifelines Cohort Study and Biobank, Groningen, The Netherlands
⁴ Department of Genetics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
⁵ Department of Psychiatry, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
⁶ Center of Development and Innovation, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
⁷ Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
⁸ Department of Internal Medicine, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
⁹ Team Strategy &External Relations, University of Groningen, University Medical Center Groningen, the Netherlands
Please have a look at this publication as an example on how to use the banner,you could add ‘Lifelines Corona Research Initiative’ to the author list.

Developmental Coordination Disorder (Motoric development children)
-   Assessment code dcd(see the developmental coordination disorder wiki page)
-   Required reference: none

Earthquakes
-   Assessment code earq (see the earthquakes wiki page)
-   Required reference: Postmes, T., et al. "Gevolgen van bodembeweging voor Groningers: Ervaren veiligheid, gezondheid en toekomstperspectief 2016-2017 (Rapport; Rijksuniversiteit Groningen)." (2018).

Informal care
-   Assessment code infq (see the informal care wiki page)
-   Paper providing additional information: Oldenkamp, Marloes, et al. "Survey nonresponse among informal caregivers: effects on the presence and magnitude of associations with caregiver burden and satisfaction." BMC public health 16.1 (2016): 1-11.

Language and music
-   Assessment code musq (see the language and music wiki page)
-   Required reference: none

Shiftwork
-   Assessment code shiq (see the shiftwork wiki page)
-   Paper providing additional information: Streng, Astrid A., et al. "Night shift work characteristics are associated with several elevated metabolic risk factors and immune cell counts in a cross-sectional study." Scientific reports 12.1 (2022): 1-11.

Skin conditions
-   Assessment code skiq (see the skin conditions wiki page)
-   Required references
       For usage of hand eczema data: Voorberg, Angelique N., Laura Loman, and Marie LA Schuttelaar. "Prevalence and severity of hand
        eczema in the Dutch general population: a cross-sectional, questionnaire study within the Lifelines cohort study." Acta dermato-
       venereologica 102 (2022).
       For usage of atopic dermatitis/eczema data: Zhang, Junfen, et al. "Prevalence of adult atopic dermatitis in the general population, with a
        focus on moderate-to-severe disease." Journal of the European Academy of Dermatology and Venereology 35.11 (2021): e787-e790.

Additional collected assessment data

CytoSNP
-   See the cytoSNP wiki page
-   Required reference: Francioli, Laurent C., et al. "Whole-genome sequence variation, population structure and demographic history of the Dutch population." Nature genetics 46.8 (2014): 818-825.
-   Two co-authorships need to be included in the publication in coordination with Dr Morris Swertz, Head of the Genomics Coordination Center, UMCG. 

DAG3
-   Assessment code dag3 (see the dag3 wiki page)
-   Required reference: none

DEEP
-   See the DEEP wiki page
-   Required reference (methylation): Bonder, Marc Jan, et al. "Disease variants alter transcription factor levels and methylation of their binding sites." Nature genetics 49.1 (2017): 131-138.
-   Required banner:
Lifelines DEEP Cohort:
Lude Franke¹, Sasha Zhernakova¹, Jingyuan Fu¹, Morris Swertz¹, Cisca Wijmenga^1
1Department of Genetics, University of Groningen, University Medical Center Groningen,  The Netherlands
Please have a look at this publication as an example on how to use the banner,you could add ‘Lifelines DEEP Cohort’ to the author list.
-   Required acknowledgement: Generation and management of Lifelines Deep data is supported by an ERC Advanced Grant to Cisca Wijmenga, ERC  Starting Grant to Lude Franke and Sasha Zhernakova, a VIDI grant to Lude Franke, Jingyuan Fu and Morris Swertz and several other subsidies from NWO / ZonMW.

GSA
-   See GSA wiki page
-   Required reference: none
 

Linked data

Air pollution
-   See the air pollution wiki page
-   Required reference: none
-   Paper providing additional information: de Hoogh, Kees, et al. "Development of West-European PM2. 5 and NO2 land use regression models incorporating satellite-derived and chemical transport modelling data." Environmental research 151 (2016): 1-10.

Municipal codes
-   See the municipal codes wiki page
-   Required reference: none

Province of birth
-   See the province of birth wiki page
-   Required reference: none

Socioeconomic status scores (SES)
-   See the SES wiki page
-   Required reference: none
 

Secondary data (researcher generated)

Chronic fatigue syndrome (CFS) diagnostic score
-   See the CFS diagnostic score wiki page
-   Required reference: none

Cogstate Speed Composite (CSC)
-   See the Cogstate Speed Composite wiki page
-   Required reference: Aretz, Benjamin, et al. "Long-term exposure to fine particulate matter, lung function and cognitive performance: A prospective Dutch cohort study on the underlying routes." Environmental Research 201 (2021): 111533.

Dutch Healthy Diet index (DHD)
-   See the Dutch Healthy Diet wiki page
-   Required references: 
        1. Baart, A. Mireille, et al. "Dietary intake in the lifelines cohort study: Baseline results from the flower food frequency questionnaire
        among 59,982 participants." Nutrients 14.1 (2021): 48.
        2. Baart, A. Mireille, et al. "Assessment of the Dutch Healthy Diet index 2015 in the Lifelines cohort study at baseline." European Journal
        of Clinical Nutrition (2023): 1-11.

Educational attainment
-   See the educational attainment wiki page
-   Required reference: none

Food allergy definition
-   See the food allergy definition wiki page
-   Required reference: none

Food frequency questionnaire (FFQ) sum scores
-   See the FFQ sum score wiki page
-   Required reference: Siebelink, Els, Anouk Geelen, and Jeanne HM de Vries. "Self-reported energy intake by FFQ compared with actual energy intake to maintain body weight in 516 adults." British journal of nutrition 106.2 (2011): 274-281.

Gender index
-   See the gender index wiki page
-   Required reference: Ballering, Aranka V., et al. "Gender and sex independently associate with common somatic symptoms and lifetime prevalence of chronic disease." Social Science & Medicine 253 (2020): 112968.
-   Important: Please note that the gender index is included in a separate data file called ‘sec_c_gender_results’. No reference is needed for the ‘basic’ gender variable included in (almost) all data files.

Heart rate variability (HRV)
-   See the HRV wiki page
-   Required reference: none 

Irritable bowel syndrome (IBS) diagnostic score
-   See the IBS diagnostic score wiki page
-   Required reference: none

ISCO job coding
-   See ISCO job coding wiki page
-   Required reference: none
-   Additional information: Download Automatic Coding System Statistics Netherlands 2018vdef.pdf

Lifelines diet score (LLDS)
-   See the LLIDS wiki page
-   Required reference: Vinke, Petra C., et al. "Development of the food-based Lifelines Diet Score (LLDS) and its application in 129,369 Lifelines participants." European Journal of Clinical Nutrition 72.8 (2018): 1111-1119.

MINI derivatives
-   See the MINI derivatives wiki page
-   Required reference: van Loo, Hanna M., et al. "Prevalence of internalizing disorders, symptoms, and traits across age using advanced nonlinear models." Psychological medicine 53.1 (2023): 78-87.

Personality sum scores
-   See the personality sum scores wiki page
-   Required reference: none

Sleep indices
-   See the sleep indices wiki page
-   Required reference: Kocevska, Desana, et al. "Sleep characteristics across the lifespan in 1.1 million people from the Netherlands, United Kingdom and United States: a systematic review and meta-analysis." Nature human behaviour 5.1 (2021): 113-122.

Smoking derivatives
-   See the smoking derivatives wiki page
-   Required reference: none

Spirometry reference values
-   See the spirometry reference values wiki page
-   Required reference: none

SQUASH sum scores
-   See the SQUASH sum scores wiki page
-   Paper providing additional information: Byambasukh, Oyuntugs. "Physical activity and cardiometabolic health: Focus on domain-specific associations of physical activity over the life course" University of Groningen (2020). https://doi.org/10.33612/diss.112903501

Stress sum scores
-   See the stress sum scores wiki page
-   Required reference: none

Ultra-processed food categorization (according to NOVA classification)
-   See the UPF categorization wiki page
-   Required reference: Duan, Ming-Jie, et al. "Ultra-processed food and incident type 2 diabetes: studying the underlying consumption patterns to unravel the health effects of this heterogeneous food category in the prospective Lifelines cohort." BMC medicine 20.1 (2022): 1-11.