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Table 1 Data planned to be collected at recruitment phase up to delivery

From: A birth cohort study in the Middle East: the Qatari birth cohort study (QBiC) phase I

Follow-up

Questionnaires

Clinical examination

Ultrasound measurements

Biological samples

Mother

 12–15 weeks

General

FFQ

24 h recall

Anthropometric characteristics

Skinfolds

Bioimpedance

SCORAD test

Metabolic syndrome

Blood pressure

Spirometry

Thyroid malfunction

Gestational diabetes

Placental function: resistance indices of the uterine and umbilical arteries

Blood

Urine

Saliva

Feces

 32 weeks

General

FFQ

24 h recall

Anthropometric characteristics

Bioimpedance

Skinfolds

Blood pressure

Spirometry

Thyroid malfunction

Gestational diabetes

Placental function: resistance indices of the uterine and umbilical arteries

Blood

Urine

Saliva

Feces

 Delivery

Psychological

Gestational diabetes, preeclampsia, hypertension

  

Father

 1st Visit

General

Anthropometric characteristics

Bioimpedance

Skinfolds

Blood pressure

 

Blood

Urine

Saliva

Feces

Semen

Fetus

 12–15 weeks

  

CRL, HC, BPD, FL, AC

 

 32 weeks

  

HC, BPD, FL, AC

Organ development: brain, heart, kidneys, blood flow

 

 Birth

 

Clinical records: induced abortion fetal or perinatal loss, caesarean

Sex, weight, length, HC, AC, Apgar score

Cord blood

Cord tissue

Placenta

Meconium

Colostrum

Breast milk

Hair

  1. Abbreviations: FFQ Food Frequency Questionnaire, CRL Crown-rump length, HC head circumference, BPD biparietal diameter, FL femur length, AC Abdominal circumference