• Cohort, name
    Generation XXI

    Cohort, abbreviation
    G21

    Cohort, country
    Portugal

    Cohort, website
    www.geracao21.com

    Key reference
    Alves E, Correia S, Barros H, Azevedo A. Prevalence of self-reported cardiovascular risk factors in Portuguese women: a survey after delivery. Int J Public Health. 2012. Oct;57(5):837-47

    Date of filling in this questionnaire:
    2013-05-29

  • Principal investigator(s), name
    Henrique Barros

    Principal investigator(s), e-mail address
    hbarros@med.up.pt

    Principal investigator(s), institution
    Department of Clinical Epidemiology, Predictive Medicine and Public Health, University of Porto Medical School, Porto, Portug

    Contact person(s), name
    Ana Cristina Santos

    Contact person(s), e-mail address
    acsantos@med.up.pt

    Contact person(s), institution address
    Al Prof Hernani Monteiro 4200-319 Porto

  • Main aim of cohort
    Although this is a multi-purpose cohort on child health and development, its two main specific aims are: •To study determinants of differences in foetal and early life growth and body composition. •To relate these changes to obesity and other health outcomes later in life.

    Recruited number of:
    8647 children / 8495 mothers / 4351 fathers / 0 grand parents / 0 other family members

    Approximate proportion of source population included
    70

    Source population
    Region-based

  • Period of enrollment
    Start: 2005-04-10, End: 2006-08-31

    Enrollment period
    At birth  to

    Enrollment criteria, please specify
    Main group - at birth: Gestational age >23 weeks; birth at one of the 5 level III public maternities from Porto Metropolitan Area; maternal residence at one of the six municipalities from this region. Sub-group - during pregnancy: 1st antenatal visit up to the 13th gestational week in two (of the five) maternity units.

    Planned age of children at end of follow-up
General information ---------- Child age (years) at assessment ----------
<1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Home address
School address
Birth outcomes
Birth weightX
Birth lengthX
Gestational age at birthX
Apgar scoreX
Congenital malformationsX
Stillbirth (>= 22 weeks)
Child’s sexX
Head circumference
Biparietal diameter
Child exposures ---------- Child age (years) at assessment ----------
<1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Breast feedingXXX
DietXXXXX
Dietary supplements
Childcare attendanceXXXX
Active smoking
Passive smokingXXXXX
Alcohol consumption
Physical activityXX
Substance use
Medicine intakeXXXXX
VaccinationsXXXXX
Psychological distress (e.g. bullying)
Air pollution
Access to green spaces
Built environment
Noise
Radiation, electromagnetic fields
Water contamination
Pets
Farm animal exposure
Biomarkers of exposure
Mercury
Lead
Cadmium
Arsenic
Other metals
Polychlorinated biphenyl esters
Dicloro difenil tricloroetano
Hexachlorobenzene
Brominated flame retardants
Perflouralkyl compounds
Bisphenol A
Other bisphenols
Parabens
Benzophenones
Triclosan
Phthalates
Cotinine
Child development and health ---------- Child age (years) at assessment ----------
<1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Anthropometry
WeightXXXXX
HeightXXXXX
Head circumferenceXXXX
Abdominal circumference
Arm circumference
Wrist circumference
Waist circumference
Clinical examinations
Blood pressureXX
Carotida intima media thickness
Pulse wave velocity
Cardiac ultrasound
Renal ultrasound
Brain MRI
Other MRI
DEXA‐scan resultsX
Skin folds
Bio impedence
Oscilometry
Spirometry
Skin prick test
Bronchial challenge test
Reversibility test
Dental observations
Mental and neurological development
Cognitive function
School performance
Language
ADHD
Autism
Sleep disturbancesXXXX
Mental health
Respiratory health
Asthma
Allergy
Allergic rhinitis
Eczema
Respiratory tract infections
Senses
Vision
Hearing
Musculo-skeletal health
Back pain
Neck pain
Growing pains
Sexual maturation
Tanner stage
Pubertal development stage
Age at menarche
Age at voice change
2D/4D digit ratio
Nocturnal ejaculation
Acne
Other health outcomes
Cancer
DiabetesX
Congenital anomaliesXX
Biomarkers of health
Nephrology (e.g. creatinine, albumin)
Thyroid hormones
Inflammatory markers (e.g. C-reactive protein cytokines)
Immunologic markers (e.g. immunoglobulines)
Cortisol
Vitamines and micronutrients
Gonadal axis hormones (e.g. testosterone, estradiol)
Metabolism (e.g. cholesterol, LDL, HDL, insulin, triglycerides)
Metabolomics
DNA methylation
Transcriptomics (mRNA, miRNA)
Genome-wide association study (GWAS)
Child biological samples ---------- Child age (years) at sampling ----------
At birth 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Whole blood
SerumXX
Plasma
Buffy coat
Urine
Hair
TeethX
Nails
Saliva
Purified DNA
Purified RNA
Red blood cells
Umbilical cord blood/tissueX
Blood smear
Faeces/meconium
Exhaled breathe condensate
Sputum induction
Placenta
General information
Pre-pregnancy During pregnancy <1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Education
Income
Employment status
Job title
Single parenthood
Home address
Work address
Maternal characteristics related to the index pregnancy/child
Age at birthX
Ethnicity
Country of birth
Planned pregnancyX
Time to pregnancyX
Fertility treatmentX
Prior spontaneous abortion (<22w)X
Prior birthsX
Ultrasound measurements
Doppler measurements
PreeclampsiaX
Gestational diabetes
Gestational hypertension
Gestational durationX
Mode of deliveryX
Prenatal diagnosticsX
Medical termination of pregnancyX
Maternal Exposures ---------- Timing of assessment ----------
Pre-pregnancy First trimester Second trimester Third trimester Post pregnancy
DietXXXX
Dietary supplementsXXXX
Active smokingXXXX
Passive smokingXXXX
Alcohol consumptionXXXX
Physical activityXXX
Substance useXXXX
Medicine intakeXXXX
Coffee drinkingXXXX
Psychological distress (e.g. life-events, health behaviors, perceived stress)XXXX
Occupational exposures
Heavy lifts
Work hours
Air pollution
Access to green spaces
Built environment
Noise
Radiation, electromagnetic fields
Water contamination
Binge drinkingXXXX
Pets
Farm animal exposure
Biomarkers of exposure
Mercury
Lead
Cadmium
Arsenic
Other metals
Polychlorinated biphenyl esters
Dicloro difenil tricloroetano
Hexachlorobenzene
Brominated flame retardants
Perflouralkyl compounds
Bisphenol A
Other bisphenols
Parabens
Benzophenones
Triclosan
Phthalates
Cotinine
Maternal health ---------- Timing of assessment ----------
Pre-pregnancy First trimester Second trimester Third trimester Post pregnancy
Anthropometry
WeightXX
HeightX
Waist circumference
Clinical examinations
Blood pressureX
Carotida intima media thickness
Pulse wave velocity
DEXA scans
Bioimpedence
Mental and neurological development
Mental healthX
Cognitive function (e.g. intelligence quotient)
Respiratory health
Asthma
Allergy
Musculo‐skeletal diseaseX
Back pain
Neck pain
Arthritis
Other health outcomes
CancerX
DiabetesX
Cardio‐vascular diseaseX
Family history of chronic disease
Infectious disease
Fever
Autoimmune diseaseX
Urinary symptoms
Sexual problems
Sleep disturbance
Biomarkers of health
Nephrology (e.g. creatinine, albumin)
Thyroid hormones
Inflammatory markers (e.g. C-reactive protein cytokines)
Immunologic markers (e.g. immunoglobulines)
Cortisol
Vitamines and micronutrients
Gonadal axis hormones (e.g. testosterone, estradiol)
Metabolism (e.g. cholesterol, LDL, HDL, insulin, triglycerides)
Metabolomics
DNA methylation
Transcriptomics (mRNA, miRNA)
Genome-wide association study (GWAS)
Maternal biological samples ---------- Timing of sampling ----------
Pre-pregnancy First trimester Second trimester Third trimester Post pregnancy
Breast milk
Whole bloodX
SerumX
Plasma
Buffy coat
Urine
Hair
Nails
Saliva
Purified DNA
Purified RNA
Red blood cells
Faeces
General information
Pre-pregnancy During pregnancy <1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Education
Income
Employment status
Job title
Single parenthood
Home address
Work address
Paternal characteristics related to the index pregnancy/child
Fertility treatment
Age at child's birthX
Ethnicity
Country of birth
Paternal exposures ---------- Timing of assessment ----------
Pre-pregnancy During pregnancy Post pregnancy
Diet
Dietary supplements
Active smokingX
Passive smokingX
Alcohol consumptionX
Physical activity
Substance useX
Medicine intake
Coffee drinking
Psychological distress (e.g. life-events, health behaviors, perceived stress)
Occupational exposuresX
Heavy lifts
Work hours
Air pollution
Access to green spaces
Built environment
Noise
Radiation, electromagnetic fields
Water contamination
Binge drinking
Pets
Farm animal exposure
Biomarkers of exposure
Mercury
Lead
Cadmium
Arsenic
Other metals
Polychlorinated biphenyl esters
Dicloro difenil tricloroetano
Hexachlorobenzene
Brominated flame retardants
Perflouralkyl compounds
Bisphenol A
Other bisphenols
Parabens
Benzophenones
Triclosan
Phthalates
Cotinine
Paternal health ---------- Timing of assessment ----------
Pre-pregnancy During pregnancy Post pregnancy
Anthropometry
WeightX
HeightX
Waist circumference
Clinical examinations
Blood pressureX
Carotida intima media thickness
Pulse wave velocity
DEXA scans
Bio impedence
Mental and neurological development
Mental healthX
Cognitive function (e.g. intelligence quotient)
Respiratory health
Asthma
Allergy
Musculo‐skeletal diseaseX
Back pain
Neck pain
Arthritis
Other health outcomes
CancerX
DiabetesX
Cardio‐vascular diseaseX
Family history of chronic disease
Infectious disease
Fever
Autoimmune diseaseX
Urinary symptoms
Sexual problems
Sleep disturbance
Biomarkers of health
Nephrology (e.g. creatinine, albumin)
Thyroid hormones
Inflammatory markers (e.g. C-reactive protein cytokines)
Immunologic markers (e.g. immunoglobulines)
Cortisol
Vitamines and micronutrients
Gonadal axis hormones (e.g. testosterone, estradiol)
Metabolism (e.g. cholesterol, LDL, HDL, insulin, triglycerides)
Metabolomics
DNA methylation
Transcriptomics (mRNA, miRNA)
Genome-wide association study (GWAS)
Paternal biological samples ---------- Timing of sampling ----------
Pre-pregnancy During pregnancy Post pregnancy
Semen
Whole bloodX
SerumX
Plasma
Buffy coat
Urine
Hair
Nails
Saliva
Purified DNA
Purified RNA
Red blood cells
Faeces
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