Dataset

Anthropometry

Anthropometric measurements incl. height, weight, body mass index (BMI), and body circumferences

For YS2: Growth data obtained via the Youth Health Services for multiples and since 2010 also for siblings, paternal reports available since 2014. For YS2: Growth data obtained via the Youth Health Services for multiples and since 2010 also for siblings. For YS_10: Anthropometry information included since 2008. For YC_BS1: height and weight were also measured prior to MRI scanning. For YC_BS2: height and weight were also measured after MRI scanning and growth data was obtained via the Youth Health Services for multiples. For YC_DSC birth height and weight were obtained during a telephone interview. For YE_FITNSS anthropometrics were obtained at the beginning of the experimental protocol. For YE_ATTEF2 height and weight were measured at the end of the experimental protocol. For YE_ATTEF3 height and weight were measured at the end of the experimental protocol. For YC_ADHMRI birth height and weight were obtained during a telephone interview and current height and weight prior to the MRI scanning. For YE_COG18 physical measurements including antropometric information were also obtained during the experimental protocol.

Labels	anthropometry health obesity
Constructs	physiology
Available measurements	Young Netherlands Twin Register YS_1 MM MF MC 0 months - 12 months From 1987-01-01 (ongoing) YS_2 MC FC MS FS 24 months From 1990-01-01 (ongoing) YS_3 MC FC 36 months From 1990-01-01 (ongoing) YS_5 MC MS 5.0 years From 1994-01-01 (ongoing) YS_7 MC FC MS FS MM FF 7.0 years From 1995-01-01 (ongoing) YS_10 MC FC MS FS MM FF 9.0 - 10.0 years From 1997-01-01 (ongoing) YS_12 MC FC MS FS MM FF 12.0 years From 1998-01-01 (ongoing) YS_DHBQP CC SS 14.0 - 18.0 years From 2004-01-01 to 2004-01-01 YS_DHBQ14 CC SS 14.0 years From 2005-01-01 to 2013-01-01 YS_DHBQ16 CC SS 16.0 years From 2005-01-01 to 2013-01-01 YS_DHBQ18 CC SS 18.0 years From 2005-01-01 to 2006-01-01 YC_BS1 MC MS C S 9.0 years From 2005-01-01 to 2005-01-01 YC_BS2 MC MS CC SS C S 12.0 years From 2007-01-01 to 2009-01-01 YC_BS3 C S 17.0 years From 2012-01-01 to 2014-01-01 YC_DSC MC 10.0 - 13.0 years From 2002-01-01 to 2005-01-01 YE_FITNSS C S 16.0 - 18.0 years From 2012-01-01 to 2014-01-01 YE_ATTEF2 C S PS 12.0 years From 2002-01-01 to 2004-01-01 YE_ATTEF3 C 15.0 - 23.0 years From 2007-01-01 to 2010-01-01 YC_ADHMRI MC C 15.0 years From 2003-01-01 to 2007-01-01 YE_COG18 MC MM MF MS C S 18.0 years From 2004-01-01 to 2006-01-01 YS_TRIP1 MC MM MF 12 months From 1990-01-01 to 2001-01-01 YS_TRIP2 MC 24 months From 1991-01-01 to 1993-01-01 YS_TRIP1_2 MC MM MF 12 months - 24 months From 2008-01-01 (ongoing) YS_TRIP3 MC FC 36 months From 1991-01-01 (ongoing) YS_TRIP4 MC FC 4.0 years From 1998-01-01 to 2011-01-01 YS_TRIP5 MC FC 5.0 years From 1991-01-01 (ongoing) YS_TRIP7 MC FC 7.0 years From 1998-01-01 (ongoing) YS_TRIP10 MC FC 9.0 - 10.0 years From 1998-01-01 (ongoing) YS_TRIP12 MC FC 12.0 years From 1998-01-01 (ongoing)
Mode of collection	SelfAdministeredQuestionnaire

You can also access this dataset using the API (see API Docs).

author	None
author_email	None
creator_user_id	6c404c5c-dbec-4933-bc54-0b7656c773ba
dc_additional_info	For YS2: Growth data obtained via the Youth Health Services for multiples and since 2010 also for siblings, paternal reports available since 2014. For YS2: Growth data obtained via the Youth Health Services for multiples and since 2010 also for siblings. For YS_10: Anthropometry information included since 2008. For YC_BS1: height and weight were also measured prior to MRI scanning. For YC_BS2: height and weight were also measured after MRI scanning and growth data was obtained via the Youth Health Services for multiples. For YC_DSC birth height and weight were obtained during a telephone interview. For YE_FITNSS anthropometrics were obtained at the beginning of the experimental protocol. For YE_ATTEF2 height and weight were measured at the end of the experimental protocol. For YE_ATTEF3 height and weight were measured at the end of the experimental protocol. For YC_ADHMRI birth height and weight were obtained during a telephone interview and current height and weight prior to the MRI scanning. For YE_COG18 physical measurements including antropometric information were also obtained during the experimental protocol.
dc_analysis_unit	[]
dc_cohort	NTR
dc_mode_of_collection	SelfAdministeredQuestionnaire
id	b7715203-85f7-4731-8174-293827bfd485
isopen	False
license_title	None
maintainer	None
maintainer_email	None
metadata_created	2023-03-28T10:01:25.677525
metadata_modified	2023-04-04T12:49:03.153883
name	b2e1438e144b79c750b7de79bd4c8f18
notes	Anthropometric measurements incl. height, weight, body mass index (BMI), and body circumferences
num_resources	0
num_tags	0
organization	{'id': '1c79e3cf-de04-4f4c-aa77-46aff3228db4', 'name': 'ntr', 'title': 'NTR', 'type': 'organization', 'description': 'The Netherlands Twin Register (NTR) consists of individuals who have agreed to participate in twin-family studies and was established and is managed by the Department of Biological Psychology, VU University Amsterdam (see: https://tweelingenregister.vu.nl/). The NTR was established in 1987 and has enrolled around 120.000 twins and a roughly equal number of their relatives. The majority of twin families have participated one or more times in survey studies on a host of epidemiological variables including social demography, personality, lifestyle, somatic and mental health, and subsamples took part in biomaterial collection (e.g. DNA) and dedicated projects for e.g. neuropsychological, biomarker, and behavioural traits. The recruitment into the NTR is fully inclusive without any restrictions on enrolment. The NTR is committed to actively seek the commitment of its participants to science and their continued involvement in NTR research by maintaining a website, electronic newsletters, and the MijnNTR portal that provides personalized feedback to participants. The NTR resources, e.g. the longitudinal phenotyping, the extended pedigree structures, and the multi-generation genotyping allow for future twin-family research that will contribute to gene discovery, causality modelling, and studies of genetic and cultural inheritance of behavioural traits and mental and physical health. In the CD2 portal, only the NTR projects for children and adolescents (<18 years of age) have been included. This is refered to as the Young Netherlands Twin Register (YNTR).', 'image_url': 'https://beta.data.individualdevelopment.nl/img/logo_ntr.png', 'created': '2023-03-06T15:49:42.299075', 'is_organization': True, 'approval_status': 'approved', 'state': 'active'}
owner_org	1c79e3cf-de04-4f4c-aa77-46aff3228db4
private	False
state	active
title	Anthropometry
type	dataset
dc_constructs	[{'dc_construct': 'physiology'}]
dc_labels	[{'dc_label': 'anthropometry'}, {'dc_label': 'health'}, {'dc_label': 'obesity'}]
measure_age_range	[{'measure_age_month': 0}, {'measure_age_month': 1}, {'measure_age_month': 2}, {'measure_age_month': 3}, {'measure_age_month': 4}, {'measure_age_month': 5}, {'measure_age_month': 6}, {'measure_age_month': 7}, {'measure_age_month': 8}, {'measure_age_month': 9}, {'measure_age_month': 10}, {'measure_age_month': 11}, {'measure_age_month': 12}, {'measure_age_month': 13}, {'measure_age_month': 14}, {'measure_age_month': 15}, {'measure_age_month': 16}, {'measure_age_month': 17}, {'measure_age_month': 18}, {'measure_age_month': 19}, {'measure_age_month': 20}, {'measure_age_month': 21}, {'measure_age_month': 22}, {'measure_age_month': 23}, {'measure_age_month': 24}, {'measure_age_month': 36}, {'measure_age_month': 48}, {'measure_age_month': 60}, {'measure_age_month': 84}, {'measure_age_month': 108}, {'measure_age_month': 109}, {'measure_age_month': 110}, {'measure_age_month': 111}, {'measure_age_month': 112}, {'measure_age_month': 113}, {'measure_age_month': 114}, {'measure_age_month': 115}, {'measure_age_month': 116}, {'measure_age_month': 117}, {'measure_age_month': 118}, {'measure_age_month': 119}, {'measure_age_month': 120}, {'measure_age_month': 121}, {'measure_age_month': 122}, {'measure_age_month': 123}, {'measure_age_month': 124}, {'measure_age_month': 125}, {'measure_age_month': 126}, {'measure_age_month': 127}, {'measure_age_month': 128}, {'measure_age_month': 129}, {'measure_age_month': 130}, {'measure_age_month': 131}, {'measure_age_month': 132}, {'measure_age_month': 133}, {'measure_age_month': 134}, {'measure_age_month': 135}, {'measure_age_month': 136}, {'measure_age_month': 137}, {'measure_age_month': 138}, {'measure_age_month': 139}, {'measure_age_month': 140}, {'measure_age_month': 141}, {'measure_age_month': 142}, {'measure_age_month': 143}, {'measure_age_month': 144}, {'measure_age_month': 145}, {'measure_age_month': 146}, {'measure_age_month': 147}, {'measure_age_month': 148}, {'measure_age_month': 149}, 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{'measure_age_month': 196}, {'measure_age_month': 197}, {'measure_age_month': 198}, {'measure_age_month': 199}, {'measure_age_month': 200}, {'measure_age_month': 201}, {'measure_age_month': 202}, {'measure_age_month': 203}, {'measure_age_month': 204}, {'measure_age_month': 205}, {'measure_age_month': 206}, {'measure_age_month': 207}, {'measure_age_month': 208}, {'measure_age_month': 209}, {'measure_age_month': 210}, {'measure_age_month': 211}, {'measure_age_month': 212}, {'measure_age_month': 213}, {'measure_age_month': 214}, {'measure_age_month': 215}, {'measure_age_month': 216}, {'measure_age_month': 217}, {'measure_age_month': 218}, {'measure_age_month': 219}, {'measure_age_month': 220}, {'measure_age_month': 221}, {'measure_age_month': 222}, {'measure_age_month': 223}, {'measure_age_month': 224}, {'measure_age_month': 225}, {'measure_age_month': 226}, {'measure_age_month': 227}, {'measure_age_month': 228}, {'measure_age_month': 229}, {'measure_age_month': 230}, 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wave	[{'wave_ckan_id': '3a693dad9a44a89bc4eb0573d6772dc1', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'After registration of newborn twins, which is before the age of 12 months for 89% of the twins, the mother of a twin pair receives the first survey which focuses on conception (spontaneous or otherwise), information from parents themselves (demographics, height, weight), pregnancy (e.g. duration, smoking and drinking behaviors of both parents during pregnancy), birth and health (malformations) of the children shortly after birth. The mother is asked to fill in this survey, and this was done by the biological mother for almost all of surveys with others (stepmother, adoptive mother, some fathers) completing this survey in a small number of families (<0.05%).', 'wave_start_date_collection': '1987-01-01', 'wave_subject_codes': ['MM', 'MF', 'MC'], 'wave_title': 'YS_1', 'wave_universe': '0-12'}, {'wave_ckan_id': '1d4e5f7df280db50a12c597b946732f9', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'This projects gathers maternal report (fathers added in 2014) on motor development, breastfeeding, health, handedness in 2-year old twins and growth data (including height and weight) as obtained from the Dutch National Health Services (from 2010). From 2008 onwards, items on well-being, child care, and temperament were added to the surveys.', 'wave_start_date_collection': '1990-01-01', 'wave_subject_codes': ['MC', 'FC', 'MS', 'FS'], 'wave_title': 'YS_2', 'wave_universe': '24'}, {'wave_ckan_id': '3554bfb9093b461891d5a205dfb23c9d', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'In this project surveys are sent to both parents around the 3th birth year of the twin. The survey includes the CBCL 1.5-5, items on zygosity, health, growth data as obtained from the Dutch National Health Services, child care, demographic characteristics, including religious background and parental education and occupation. From 2009 onwards, additional items on well-being, leisure activities, sport activities and life events of the parents are included.', 'wave_start_date_collection': '1990-01-01', 'wave_subject_codes': ['MC', 'FC'], 'wave_title': 'YS_3', 'wave_universe': '36'}, {'wave_ckan_id': '35cb2dc618bc747a52645a535c996521', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'In this project surveys are sent to the mothers around the 5th birth year of the twin. The YNTR survey 5 includes items on child care and school, growth, zygosity, toilet training, asthma and eczema, fine motor coordination, language development, and problem behaviors as assessed by a short version of the Devereux Child Behavior Checklist (DCB). The booklet includes an extra section for fathers of twins to report about behavior problems. From 2011 onward, items on child care and school, living and family situation were updated and items on well-being were added. From the second half of 2015 the short form of the Childhood Behavior Questionnaire (CBQ) was added. From 2017 the surveys no longer have a separate section for the father.', 'wave_start_date_collection': '1994-01-01', 'wave_subject_codes': ['MC', 'MS'], 'wave_title': 'YS_5', 'wave_universe': '60'}, {'wave_ckan_id': '44dbd4cca626dd1e7bf939d3829d349a', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'At age 7 information on the twins is collected from both parents and targets the development of emotional and behavior problems, as assessed by the Child Behavior Checklist 6-18 (CBCL). From 2001 onwards, the Conners’ Parent Rating Scale — Revised (CPRS-R) was also included. In addition, these surveys included items on zygosity, medical conditions, vaccinations, tonsillectomy (from 2005), demographic characteristics, growth, sport and leisure activity of both children and parents, and additional items on well-being (from 2010). In 2017 the survey has been considerably shortened (for example the Conners was removed).', 'wave_start_date_collection': '1995-01-01', 'wave_subject_codes': ['MC', 'FC', 'MS', 'FS', 'MM', 'FF'], 'wave_title': 'YS_7', 'wave_universe': '84'}, {'wave_ckan_id': '58504d30f700ff7a0c9839ef5c05de49', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The YNTR survey 9/10 targets the development of emotional and behavior problems, as assessed by the Child Behavior Checklist 6-18 (CBCL). From 2001 onwards, the Conners’ Parent Rating Scale — Revised (CPRS-R) was also included. In addition, these surveys included items on zygosity, medical conditions, vaccinations, tonsillectomy (from 2005), demographic characteristics, growth, sport and leisure activity of both children and parents, and additional items on well-being (from 2010).', 'wave_start_date_collection': '1997-01-01', 'wave_subject_codes': ['MC', 'FC', 'MS', 'FS', 'MM', 'FF'], 'wave_title': 'YS_10', 'wave_universe': '108-120'}, {'wave_ckan_id': '4af11627993b2ab9c02f352cdc42c7ec', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': "The YNTR survey 12 was emailed to both parents of twins around the 12th birthday of the twins. The survey targets the development of emotional and behavior problems, as assessed by the Child Behavior Checklist 6-18 (CBCL). From 2001 onwards, the Conners’ Parent Rating Scale — Revised (CPRS-R) was also included. In addition, these surveys included items on zygosity, medical conditions, demographic characteristics, growth, sport and leisure activity of both children and parents (from 2003), and additional items on well-being (from 2008). In 2017 and 2018 the length of the questionnaire was shortened, the ASEBA Brief Problem Monitor (BPM) was used in stead of the CBCL, and the 'cito survey' was added (see YS_CITO). From 2019, the questionnaire returned to its original length with CBCL and Conners items, and from 2020 the items on leisure time and on family and living situation were removed.", 'wave_start_date_collection': '1998-01-01', 'wave_subject_codes': ['MC', 'FC', 'MS', 'FS', 'MM', 'FF'], 'wave_title': 'YS_12', 'wave_universe': '144'}, {'wave_ckan_id': 'd505a6b3862a18530a02bc064560232f', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The Dutch Health and Behavior Questionnaire (DHBQ) was developed at the department of Biological Psychology of the VU University. It is a collection of standardized questions targeting multiple domains. The focus of the survey is on emotional and behavioral problems assessed by the Youth Self-Report (YSR), subjective wellbeing, lifestyle, exercise behavior, sedentary behavior, and family functioning.', 'wave_end_date_collection': '2004-01-01', 'wave_start_date_collection': '2004-01-01', 'wave_subject_codes': ['CC', 'SS'], 'wave_title': 'YS_DHBQP', 'wave_universe': '168-216'}, {'wave_ckan_id': 'ed26c162acb020537709ae8becc88923', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The Dutch Health and Behavior Questionnaire (DHBQ) was developed at the department of Biological Psychology of the VU University. It is a collection of standardized questions targeting multiple domains. The focus of the survey is on emotional and behavioral problems assessed by the Youth Self-Report (YSR), subjective wellbeing, lifestyle, exercise behavior, sedentary behavior, and family functioning. ', 'wave_end_date_collection': '2013-01-01', 'wave_start_date_collection': '2005-01-01', 'wave_subject_codes': ['CC', 'SS'], 'wave_title': 'YS_DHBQ14', 'wave_universe': '168'}, {'wave_ckan_id': 'd8a6935d6790951263a80058b32a7419', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The Dutch Health and Behavior Questionnaire (DHBQ) was developed at the department of Biological Psychology of the VU University. It is a collection of standardized questions targeting multiple domains. The focus of the survey is on emotional and behavioral problems assessed by the Youth Self-Report (YSR), subjective wellbeing, lifestyle, exercise behavior, sedentary behavior, and family functioning. From 2007, the survey includes the NEO Five Factor Inventory (NEO-FFI) and removed items regarding religion, stuttering, type of transportation to school, and hair/eye color.', 'wave_end_date_collection': '2013-01-01', 'wave_start_date_collection': '2005-01-01', 'wave_subject_codes': ['CC', 'SS'], 'wave_title': 'YS_DHBQ16', 'wave_universe': '192'}, {'wave_ckan_id': '3515068706840217f2db928643f5a169', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The Dutch Health and Behavior Questionnaire (DHBQ) was developed at the department of Biological Psychology of the VU University. It is a collection of standardized questions targeting multiple domains. The focus of the survey is on emotional and behavioral problems assessed by the Youth Self-Report (YSR), subjective wellbeing, lifestyle, exercise behavior, sedentary behavior, and family functioning.', 'wave_end_date_collection': '2006-01-01', 'wave_start_date_collection': '2005-01-01', 'wave_subject_codes': ['CC', 'SS'], 'wave_title': 'YS_DHBQ18', 'wave_universe': '216'}, {'wave_ckan_id': '3dafc9bb0eeddab5d4d834b78aafb277', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The main aim of this project was to explore to what extent genetic and environmental factors explain individual differences in brain development and cognition. The study was the start of a Dutch longitudinal study in which twins, their siblings and their parents were assessed at three year intervals. Data collection included psychometric IQ tests, a comprehensive neuropsychological testing protocol, and parental and self-ratings of behavioral and emotional problems. Physical maturation was measured through assessment of Tanner stages. Hormonal levels (cortisol, luteinizing hormone, follicle-stimulating hormone, testosterone, and estrogens) were assessed in urine and saliva. Brain scans were acquired using 1.5 Tesla Magnetic Resonance Imaging (MRI), which provided volumetric measures and measures of cortical thickness. Buccal swabs were collected for DNA isolation for future candidate gene and genome-wide analysis studies', 'wave_end_date_collection': '2005-01-01', 'wave_start_date_collection': '2005-01-01', 'wave_subject_codes': ['MC', 'MS', 'C', 'S'], 'wave_title': 'YC_BS1', 'wave_universe': '108'}, {'wave_ckan_id': 'c5467bc75c9c3b0964e9d728cd3d56f0', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The main aim of this project was to explore to what extent genetic and environmental factors explain individual differences in brain development and cognition. The study was a part of a Dutch longitudinal study in which twins, their siblings and their parents were assessed at three years interval. This project included the measurement three years after baseline, around the 12th birthday of the twins. Data collection included psychometric IQ tests, a comprehensive neuropsychological testing protocol, and parental and self-ratings of behavioral and emotional problems. Physical maturation was measured through assessment of Tanner stages. Hormonal levels (cortisol, luteinizing hormone, follicle-stimulating hormone, testosterone, and estrogens) were assessed in urine and saliva. Brain scans were acquired using 1.5 Tesla Magnetic Resonance Imaging (MRI), which provided volumetric measures and measures of cortical thickness. Buccal swabs were collected for DNA isolation for future candidate gene and genome-wide analysis studies.', 'wave_end_date_collection': '2009-01-01', 'wave_start_date_collection': '2007-01-01', 'wave_subject_codes': ['MC', 'MS', 'CC', 'SS', 'C', 'S'], 'wave_title': 'YC_BS2', 'wave_universe': '144'}, {'wave_ckan_id': '687788658d4a22ff44185f6f5fce3259', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The main aim of this project was to explore to what extent genetic and environmental factors explain individual differences in brain development and cognition. The study was a part of a Dutch longitudinal study in which twins, their siblings and their parents were assessed at three years interval. This project included the measurement eight years after baseline, around the 17th birthday of the twins. Data collection included psychometric IQ tests, a comprehensive neuropsychological testing protocol, and parental and self-ratings of behavioral and emotional problems. Physical maturation was measured through assessment of Tanner stages. Hormonal levels were assessed in urine and saliva. Brain scans were acquired using 1.5 Tesla Magnetic Resonance Imaging (MRI), which provided volumetric measures and measures of cortical thickness. Buccal swabs were collected for DNA isolation for future genetic association studies.', 'wave_end_date_collection': '2014-01-01', 'wave_start_date_collection': '2012-01-01', 'wave_subject_codes': ['C', 'S'], 'wave_title': 'YC_BS3', 'wave_universe': '204'}, {'wave_ckan_id': '0fdd2cc18b1fa8eaad6f87bff8762f98', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The purpose of this project was to investigate the relation between Diagnostic and Statistical Manual of Mental Disorders (DSM-IV) diagnosis of ADHD and Child Behavioral Checklist Attention Problems (CBCL-AP) scores. Twins were selected based on their maternal CBCL-AP scores at ages 7, 10 and 12. Twin pairs were selected if at least one of the twins scored high on AP (affected pairs), or if both twins scored low on AP (control pairs). In families that agreed to participate, the mother of the twins was interviewed by telephone with the Diagnostic Interview Schedule for Children (DISC-IV). Other surveys that were collected are the CBCL, SWAN and YSR. Mouth swabs were used to collect buccal cell samples, from which DNA was extracted.', 'wave_end_date_collection': '2005-01-01', 'wave_start_date_collection': '2002-01-01', 'wave_subject_codes': ['MC'], 'wave_title': 'YC_DSC', 'wave_universe': '120-156'}, {'wave_ckan_id': '7d0c589d83cffbbbd34a2a6430f735ae', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'This study aimed to investigate determinants of adolescent exercise behavior in a sample of healthy twins and their siblings. Body composition was measured, as well as physical fitness (standing jump, hand grip, sit-and reach flexibility, balance tests). Impulsiveness of the subjects was assessed by the delay discounting questionnaire. Regular voluntary exercise behavior was measured by a short lifestyle interview. While being equipped with a VU-AMS and Cosmed device, the subjects performed two submaximal exercise tests and one maximal exercise test. The VU University Ambulatory Monitoring System (VU-AMS) device records electrocardiogram (ECG) data and impedance cardiogram (ICG) data. The Cosmed device measures oxygen consumption (VO2) and carbon dioxide production (VCO2). VO2max (endurance capacity) was derived during the maximal exercise test. Before, during and after the exercise tests, subjects filled out the Activation-Deactivation Adjective Checklist (AD ACL), Feeling Scale (FS) and the Borg’s Rating of Perceived Exertion (RPE) at multiple time points. These questionnaires determined the subjects’ affective response to exercise. To determine zygosity, DNA was collected through buccal swabs.', 'wave_end_date_collection': '2014-01-01', 'wave_start_date_collection': '2012-01-01', 'wave_subject_codes': ['C', 'S'], 'wave_title': 'YE_FITNSS', 'wave_universe': '192-216'}, {'wave_ckan_id': 'b3fb4888024a37412eef809351edb5eb', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'This project is the second measurement of a longitudinal study on the source of individual differences of cognition, attention, and executive functioning from preschool to young adulthood. This project included the measurement five years after baseline and additionally recruited new twin pairs and siblings of the twin pairs. Behavioral data were collected with surveys filled in by parents and teachers (Conners, Child Behavior Checklist (CBCL), Strengths and Weaknesses of ADHD symptoms and Normal behavior Scale (SWAN), Teacher Report Form (TRF)) or filled in by children themselves (Youth Self Report (YSR)). To measure pubertal development, children filled in the Tanner questionnaire. Neurocognitive abilities were assessed with computerized ANT tasks, Flanker, Simon and Stroop. IQ was assessed with WISC-R. DNA was collected to determine zygosity and for genotyping SNP’S at candidate gene loci. Saliva was collected to assess cortisol concentrations.', 'wave_end_date_collection': '2004-01-01', 'wave_start_date_collection': '2002-01-01', 'wave_subject_codes': ['C', 'S', 'PS'], 'wave_title': 'YE_ATTEF2', 'wave_universe': '144'}, {'wave_ckan_id': '149d4a83159ca28e0f78eb5b2379cfbb', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'This project is part three of a longitudinal twin study on attention and cognition. This project included the measurement eleven years after baseline and particularly focused on performance pressure. Twins that participated in the previous projects as preschoolers or preteens, were invited again, but additional twin pairs were recruited into the project. Cognitive abilities were measured with computerized tests which took place at the VU: a working memory capacity task, a mental rotation task (MRT) and the Advanced Raven’s Progressive Matrices, which measures intelligence. During the Raven and MRT, participants were subjected to either high pressure or low pressure from the test assistants. During the assessment tasks heart rate, cardiac sympathetic and parasympathetic control were measured using the Ambulatory Monitoring System (AMS) device. The tasks were followed by questionnaires about task perception and social comparison.', 'wave_end_date_collection': '2010-01-01', 'wave_start_date_collection': '2007-01-01', 'wave_subject_codes': ['C'], 'wave_title': 'YE_ATTEF3', 'wave_universe': '180-276'}, {'wave_ckan_id': 'da08497f2ef7d7868f6ef93b9ad8d22f', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'Within the ADHD-MRI project, the genetic and environmental influence on ADHD related neurobiological changes were investigated in monozygotic twins. Twins were selected based on their Child Behavior Checklist Attention Problems (CBCL-AP) scores obtained in the regular YNTR survey waves and divided into three groups: discordant pairs (one affected, one unaffected), concordant pairs (both affected) and control pairs (both unaffected). To determine the presence of ADHD, mothers of the participants were interviewed with the Diagnostic Interview Schedule for Children (DISC-IV). Additionally, they filled in two behavioral questionnaires (CBCL and Strengths and Weaknesses of ADHD Symptoms and Normal Behavior (SWAN)). The twins filled in the Youth Self Report (YSR). Based on the outcome of the interview and questionnaires, twin pairs that were found eligible for the MRI experiments were invited. Both structural and functional MRI (color-stroop and flanker tasks) were performed. DNA was collected to confirm zygosity.', 'wave_end_date_collection': '2007-01-01', 'wave_start_date_collection': '2003-01-01', 'wave_subject_codes': ['MC', 'C'], 'wave_title': 'YC_ADHMRI', 'wave_universe': '180'}, {'wave_ckan_id': '8fb82c775194379af04d33ee9bba53db', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'This project is the fifth measurement of a longitudinal study into the development of intelligence and problem behaviour (waves one and two not included in CD2) to which additional participants were recruited (twins with siblings and their parents). The test protocol consisted of a physical part and a psychological part. Physical measurements included cardiovascular functioning (assessed with the VU-AMS device), a physical examination with basic anthropometric measurements and the collection of saliva, DNA and fingerprints. The psychological part consisted of a series of cognitive tests that measured the following abilities: intelligence (Wechsler Intelligence Scale for Children, WISC-R or Revised Amsterdamse Kinder Intelligentie Test, RAKIT); inhibition (Stroop); spontaneous production of words (Verbal fluency); verbal learning and memory (California Verbal Learning Task, CVLT); emotion recognition (Reading the mind in the eyes); perceptual speed (Π inspection time task); spatial short term memory (n-back task and Corsi block tapping task). Furthermore, some questionnaires were administered to the participants (Autism-Spectrum Quotient, Tanner self-report), mothers of the twins (Social Responsiveness Scale) and research assistants (Test Observation form).', 'wave_end_date_collection': '2006-01-01', 'wave_start_date_collection': '2004-01-01', 'wave_subject_codes': ['MC', 'MM', 'MF', 'MS', 'C', 'S'], 'wave_title': 'YE_COG18', 'wave_universe': '216'}, {'wave_ckan_id': '203163b298931a92c85fd3c957f92ee6', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The survey for triplets at age 1 is a 2-page survey that includes items on pregnancy, gestational age, smoking and alcohol consumption during pregnancy, and mode of delivery. The content of this survey is highly comparable with the survey 1 for twins (YS_1).', 'wave_end_date_collection': '2001-01-01', 'wave_start_date_collection': '1990-01-01', 'wave_subject_codes': ['MC', 'MM', 'MF'], 'wave_title': 'YS_TRIP1', 'wave_universe': '12'}, {'wave_ckan_id': '44066be198ba4aa5e399a3803a404d88', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The survey at age 2 for triplets includes information on breastfeeding, attaining miles stones, and growth.', 'wave_end_date_collection': '1993-01-01', 'wave_start_date_collection': '1991-01-01', 'wave_subject_codes': ['MC'], 'wave_title': 'YS_TRIP2', 'wave_universe': '24'}, {'wave_ckan_id': '913e7214793a3495c2bfd111288b3077', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'In 2008, a combination of the triplet surveys at age 1 and 2 was sent to mothers of all triplets. Since 2009, the combined survey 1 and 2 served as the first survey for newly registered triplets. The combined survey comprises items on pregnancy, gestational age, smoking and alcohol consumption during pregnancy, mode of delivery, breastfeeding, attaining miles stones, and growth.', 'wave_start_date_collection': '2008-01-01', 'wave_subject_codes': ['MC', 'MM', 'MF'], 'wave_title': 'YS_TRIP1_2', 'wave_universe': '12-24'}, {'wave_ckan_id': '41f17f36f5ec8a43efda6db11becf398', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The Child Behavior Checklist (CBCL1.5-5) is sent to parents of approximately 3-year old triplets, together with a short general questionnaire on parental and triplet characteristics (e.g., parental employment and religion, triplet school achievements and health).', 'wave_start_date_collection': '1991-01-01', 'wave_subject_codes': ['MC', 'FC'], 'wave_title': 'YS_TRIP3', 'wave_universe': '36'}, {'wave_ckan_id': '1119b93d50d99c5463cb714274011070', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The Child Behavior Checklist was sent to parents of approximately 4-year old triplets, together with a short general questionnaire on parental and triplet characteristics (e.g., parental employment and religion, triplet school achievements and health).', 'wave_end_date_collection': '2011-01-01', 'wave_start_date_collection': '1998-01-01', 'wave_subject_codes': ['MC', 'FC'], 'wave_title': 'YS_TRIP4', 'wave_universe': '48'}, {'wave_ckan_id': '58f593dd48cc347a57e1cc4d26e8b75f', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The Child Behavior Checklist (CBCL1.5-5) is sent to parents of approximately 5-year old triplets, together with a short general questionnaire on parental and triplet characteristics (e.g., parental employment and religion, triplet school achievements and health).', 'wave_start_date_collection': '1991-01-01', 'wave_subject_codes': ['MC', 'FC'], 'wave_title': 'YS_TRIP5', 'wave_universe': '60'}, {'wave_ckan_id': '43ef652fa4724afac10c1c840c3bf9c8', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The Child Behavior Checklist (CBCL6_18) is sent to parents of approximately 7-year old triplets, together with a short general questionnaire on parental and triplet characteristics (e.g., parental employment and religion, triplet school achievements and health).', 'wave_start_date_collection': '1998-01-01', 'wave_subject_codes': ['MC', 'FC'], 'wave_title': 'YS_TRIP7', 'wave_universe': '84'}, {'wave_ckan_id': 'cc84b5c3eb493113c3d4c2ab953716ba', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The Child Behavior Checklist (CBCL6_18) is sent to parents of approximately 9 or 10-year old triplets, together with a short general questionnaire on parental and triplet characteristics (e.g., parental employment and religion, triplet school achievements and health).', 'wave_start_date_collection': '1998-01-01', 'wave_subject_codes': ['MC', 'FC'], 'wave_title': 'YS_TRIP10', 'wave_universe': '108-120'}, {'wave_ckan_id': 'aa5395b9ca635e971d01c3fbcbb41630', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The Child Behavior Checklist (CBCL6_18) is sent to parents of approximately 12-year old triplets, together with a short general questionnaire on parental and triplet characteristics (e.g., parental employment and religion, triplet school achievements and health).', 'wave_start_date_collection': '1998-01-01', 'wave_subject_codes': ['MC', 'FC'], 'wave_title': 'YS_TRIP12', 'wave_universe': '144'}]
resources	[]
tags	[]
groups	[]
relationships_as_subject	[]
relationships_as_object	[]
tracking_summary	{'total': 47, 'recent': 4}