• measure Zygosity (questionnaire)

    Study:Netherlands Twin Register
    Mode of collection: SelfAdministeredQuestionnaire
    Available measurements:
    Young Netherlands Twin Register  YS_3 YS_5 YS_7 YS_10 YS_12 YS_DHBQ14 YS_DHBQ16 YC_DSC YC_ADHMRI YS_TRIP age 1 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
    5
    10
    15
    20
    25
    30
    years
    The Zygosity questionnaire asks parents of twin pairs about the resemblance between the twins to determine whether the twin pair is mono- or dizygotic. This questionnaire consists of 10 questions: 6 items about physical similarities between the twin and 4 items about confusion in identifying the twins by parents and others.
    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
    5
    10
    15
    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 Physical characteristics mother and child

    Study:Generation R
    Mode of collection: SelfAdministeredQuestionnaire
    Available measurements:
    Generation R  5-6 years
     
    0
    5
    10
    15
    20
    25
    30
    years
    Physical characteristics assesses the hair, eye and skin color of mother and child.
    Created October 17, 2024 • Updated October 20, 2024

  • measure Gender Identity (GI) questionnaire

    Study:YOUth
    Mode of collection: SelfAdministeredQuestionnaire
    Available measurements:
    Baby and Child  6 years
     
    0
    5
    10
    15
    20
    25
    30
    years
    The Gender-identity questionnaire is a parent-reported questionnaire about the gender identity of the child, in which parents are asked to indicate to what extent their child resembles other boys and girls.
    Created October 17, 2024 • Updated October 20, 2024
You can also access this registry using the API (see API Docs).