• measure Physical characteristics

    Study:Netherlands Twin Register
    Mode of collection: SelfAdministeredQuestionnaire
    Available measurements:
    Young Netherlands Twin Register  YS_DHBQP YS_DHBQ14 YS_DHBQ16 YS_DHBQ18 YC_BS2
     
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    5
    10
    15
    20
    25
    30
    years
    Physical characteristics of hair and eye color were assessed.
    Created October 17, 2024 • Updated October 20, 2024

  • measure Handedness and hand preference

    Study:Netherlands Twin Register
    Mode of collection: SelfAdministeredQuestionnaire
    Available measurements:
    Young Netherlands Twin Register  YS_2 YS_DHBQP YS_DHBQ14 YS_DHBQ16 YS_DHBQ18 YC_BS1 YC_BS2 YE_FITNSS YE_ATTEF1 YE_ATTEF2 YE_ATTEF3 YC_ADHMRI YE_COG12 YE_COG18 YS_TRIP age 2 YS_TRIP age 1-2
     
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    10
    15
    20
    25
    30
    years
    Self-reported handedness or hand preference of self or family members was assessed.
    Created October 17, 2024 • Updated October 20, 2024

  • measure Zygosity (DNA)

    Study:Netherlands Twin Register
    Mode of collection: MeasurementsAndTests    Biological sample/measurement
    Available measurements:
    Young Netherlands Twin Register  YS_3 YS_5 YS_7 YS_10 YS_12 YS_DHBQ14 YS_DHBQ16 YC_ACTION BB1_1 YC_ACTION BB1_2 YC_ACTION BB2 YC_ACTION - BB3 YC_BS1 YC_BS2 YC_BS3 YC_DSC YE_FITNSS YE_ATTEF1 YE_ATTEF2 YE_ATTEF3 YC_ADHMRI YE_COG18 YS_TRIP age 1-2 YS_TRIP age 3 YS_TRIP age 4 YS_TRIP age 5 YS_TRIP age 7 YS_TRIP age 10 YS_TRIP age 12
     
    0
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    10
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    25
    30
    years
    Zygosity typing based on micro-satellite markers, single nucleotide polymorphisms (SNP), or variable number (short) tandem repeats (VNTRs).
    Created October 17, 2024 • Updated October 20, 2024

  • measure Anthropometry

    Study:Netherlands Twin Register
    Mode of collection: SelfAdministeredQuestionnaire
    Available measurements:
    Young Netherlands Twin Register  YS_1 YS_2 YS_3 YS_5 YS_7 YS_10 YS_12 YS_DHBQP YS_DHBQ14 YS_DHBQ16 YS_DHBQ18 YC_BS1 YC_BS2 YC_BS3 YC_DSC YE_FITNSS YE_ATTEF2 YE_ATTEF3 YC_ADHMRI YE_COG18 YS_TRIP age 1 YS_TRIP age 2 YS_TRIP age 1-2 YS_TRIP age 3 YS_TRIP age 4 YS_TRIP age 5 YS_TRIP age 7 YS_TRIP age 10 YS_TRIP age 12
     
    0
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    10
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    20
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    30
    years
    Anthropometric measurements include height, weight, body mass index (BMI), and body circumferences.
    Created October 17, 2024 • Updated October 20, 2024

  • measure Pubertal Development

    Study:Netherlands Twin Register
    Mode of collection: SelfAdministeredQuestionnaire
    Available measurements:
    Young Netherlands Twin Register  YS_1 YS_DHBQP YS_DHBQ14 YS_DHBQ16 YS_DHBQ18 YC_ACTION BB1_1 YC_ACTION BB1_2 YC_ACTION BB2 YC_ACTION - BB3 YC_BS1 YC_BS2 YC_BS3 YC_DSC YE_FITNSS YC_ADHMRI YE_COG18 YS_TRIP age 1-2
     
    0
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    10
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    20
    25
    30
    years
    Pubertal Development was assessed through questions about breast growth, menstruation, shaving, deepening of the voice, and growth spurts.
    Created October 17, 2024 • Updated October 20, 2024

  • measure Lung function - Spirometry

    Study:Generation R
    Mode of collection: MeasurementsAndTests    Biological sample/measurement
    Available measurements:
    Generation R  9-10 years 13-14 years
     
    0
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    30
    years
    Lung function was measured by spirometry. Measures included FEV1, forced vital capacity (FVC), FEV1/FVC ratio, and forced expiratory flow at 75% of FVC (FEF75).
    Created October 17, 2024 • Updated October 20, 2024

  • measure Body composition and bone mineral density (Dual X energy absorptiometry)

    Study:Generation R
    Mode of collection: MeasurementsAndTests    Biological sample/measurement
    Available measurements:
    Generation R  5-6 years 9-10 years 13-14 years 17-18 years
     
    0
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    25
    30
    years
    Dual X energy absorptiometry scans (iDXA; General Electric, formerly Lunar Corp., Madison, WI) were used to obtain measurements of bone and soft tissue for the total body and sub regions, including bone mineral content (g), fat mass (g), and lean mass (g).
    Created October 17, 2024 • Updated October 20, 2024

  • measure Dental plaque and oral microbiome

    Study:Generation R
    Mode of collection: MeasurementsAndTests    Biological sample/measurement
    Available measurements:
    Generation R  13-14 years 17-18 years
     
    0
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    30
    years
    Dental plaque samples were collected by rubbing a cotton swab over the buccal sides of the right lower permanent molars. DNA was isolated from the dental plaque swabs.
    Created October 17, 2024 • Updated October 20, 2024

  • measure Tanner Scale

    Study:Generation R
    Mode of collection: SelfAdministeredQuestionnaire
    Available measurements:
    Generation R  13-14 years
     
    0
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    25
    30
    years
    The Tanner Scale describes, both pictorially and descriptively, the external changes that occur in the time period between the onset of puberty and the achievement of full maturity for both girls and boys. Characterizations of pubertal status are assessed by breast development in girls, genital development in boys and pubic hair growth in both. The Tanner...
    Created October 17, 2024 • Updated October 20, 2024

  • measure Bone mineral density and geometry of the tibia (Peripheral Quantitative Compu...

    Study:Generation R
    Mode of collection: MeasurementsAndTests    Biological sample/measurement
    Available measurements:
    Generation R  13-14 years 17-18 years
     
    0
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    30
    years
    Measurements of bone mineral density and the Geometry of the tibia by peripheral quantitative computed tomography (CT).
    Created October 17, 2024 • Updated October 20, 2024

  • measure Urine sample

    Study:Generation R
    Mode of collection: MeasurementsAndTests    Biological sample/measurement
    Available measurements:
    Generation R  Early pregnancy Mid pregnancy Late pregnancy 5-6 years 9-10 years 13-14 years 17-18 years
     
    0
    5
    10
    15
    20
    25
    30
    years
    First-morning, spot, or 24 hour urine sample.
    Created October 17, 2024 • Updated October 20, 2024

  • measure Actigraphy

    Study:Generation R
    Mode of collection: MeasurementsAndTests    Biological sample/measurement
    Available measurements:
    Generation R  12 years
     
    0
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    30
    years
    Actigraphy estimates children's sleep on both week and weekend days by wearing a tri-axial wrist accelerometer (GENEActiv, Activinsights, UK) for 9 subsequent days on their non-dominant wrist. From the actigraph, sleep duration, sleep efficiency, and sleep arousal can be assessed.
    Created October 17, 2024 • Updated October 20, 2024

  • measure Exercise test - Steep Ramp Test

    Study:Generation R
    Mode of collection: MeasurementsAndTests    Biological sample/measurement
    Available measurements:
    Generation R  13-14 years
     
    0
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    30
    years
    The Steep Ramp Test is a short maximal exercise test that measures the peak work rate (WRpeak), which is a valid and reliable estimation of the maximal aerobic exercise capacity and thus cardiorespiratory fitness.
    Created October 17, 2024 • Updated October 20, 2024

  • measure Dental development

    Study:Generation R
    Mode of collection: MeasurementsAndTests    X-ray
    Available measurements:
    Generation R  9-10 years 13-14 years
     
    0
    5
    10
    15
    20
    25
    30
    years
    Panoramic radiographs were used to ascertain dental development.
    Created October 17, 2024 • Updated October 20, 2024

  • measure Blood sample

    Study:Generation R
    Mode of collection: MeasurementsAndTests    Biological sample/measurement
    Available measurements:
    Generation R  Early pregnancy Mid pregnancy Birth 6 months 1 year 1.5 years 2 years 3 years 5-6 years 8 years 9-10 years 13-14 years 17-18 years
     
    0
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    10
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    20
    25
    30
    years
    A blood sample consists of taking an amount of a person's blood from their body.
    Created October 17, 2024 • Updated October 20, 2024

  • measure Height and weight

    Study:Generation R
    Mode of collection: MeasurementsAndTests    Anthropometrics/Body measures
    Available measurements:
    Generation R  Early pregnancy Mid pregnancy Late pregnancy 6 weeks 2 months 3 months 4 months 6 months 1 year 1.5 years 2 years 2.5 years 3 years 4 years 5-6 years 9-10 years 13-14 years 17-18 years
     
    0
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    10
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    20
    25
    30
    years
    Height and weight were measured without shoes and heavy clothing.
    Created October 17, 2024 • Updated October 20, 2024

  • measure Blood pressure

    Study:Generation R
    Mode of collection: MeasurementsAndTests    Biological sample/measurement
    Available measurements:
    Generation R  Early pregnancy Mid pregnancy Late pregnancy 6 weeks 6 months 1 year 2 years 3 years 4 years 5-6 years 9-10 years 13-14 years 17-18 years
     
    0
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    30
    years
    Blood pressure is the force of blood pushing against the walls of arteries as the heart pumps blood around the body. Systolic pressure is the pressure when the heart contracts and pushes blood out and diastolic pressure is the pressure when the heart relaxes and fills with blood. In adults, the systolic pressure normally ranges between 80 and 120 and the...
    Created October 17, 2024 • Updated October 20, 2024

  • measure Abdominal fat mass

    Study:Generation R
    Mode of collection: MeasurementsAndTests    Echo
    Available measurements:
    Generation R  2 years 5-6 years 13-14 years
     
    0
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    10
    15
    20
    25
    30
    years
    Measures of abdominal fat mass were estimated by ultrasound.
    Created October 17, 2024 • Updated October 20, 2024

  • measure Pubertal Development Scale (PDS)

    Study:Generation R
    Mode of collection: SelfAdministeredQuestionnaire
    Available measurements:
    Generation R  13-14 years
     
    0
    5
    10
    15
    20
    25
    30
    years
    The Pubertal Development Scale (PDS) assesses the development of secondary sexual characteristics, such as growth spurts, body hair growth, skin changes, breast development and menarche in girls, and voice changes and growth of testes in boys.
    Created October 17, 2024 • Updated October 20, 2024

  • measure Hair sample

    Study:Generation R
    Mode of collection: MeasurementsAndTests    Biological sample/measurement
    Available measurements:
    Generation R  5-6 years 9-10 years 13-14 years
     
    0
    5
    10
    15
    20
    25
    30
    years
    A hair sample is a collection of hair strands, which are usually cut from a person's head. Hair samples usually contain hair that has grown over the last 12 months.
    Created October 17, 2024 • Updated October 20, 2024
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