The Pregnancy Environment and Lifestyle Study (PETALS): a population-based longitudinal multi-racial birth cohort

Table 1 Overview of data collection for expected 3350 women in the Pregnancy and Environment Lifestyle Study (PETALS)

	Pregnancy			Delivery	Data source
	10–13 weeks	16–19 weeks	24–28 weeks	Delivery	Data source
Maternal variables
Demographics
Age	X				Survey
Race/ethnicity	X				Survey
Household SES	X				Survey
Medical history	X	X	X	X	Survey/EHR
Reproductive history	X				Survey/EHR
Behavioral/lifestyle
Maternal diet by FFQ	X				Survey [14]
Physical activity	X				Survey [16]
Sleep	X				Survey
Smoking and alcohol	X				Survey
Stress and depression	X				Survey [17, 18]/EHR
Anthropometry
Pre-pregnancy weight	X				EHR
Weight	X				CV
Height	X				CV
Waist and hip circumferences	X				CV
Gestational weight gain	X	X	X	X	EHR
Self-reported products use		X			Survey
Biospecimen collection
Fasting blood	X	X
Urine	X	X
GDM ascertainment			X		EHR
50-g, 1-h GCT			X		EHR
100-g, 3-hour OGTT			X		EHR
Infant variables
Estimated fetal size				X	EHR
Birth size (weight, length)				X	EHR
Gestational age at delivery				X	EHR
Infant sex				X	EHR
Measurements for the phenols-GDM case control study^a
Urinary BPA/BP-3/TCS levels
Glucose, insulin, HOMA-IR	X^a	X^a			Serum
Total adiponectin	X^a	X^a			Serum
Liver enzymes (ALT and GGT)	X^a	X^a			Serum

ALT aminotransferases, BPA bisphenol-A, BP-3 bisphenol-3, CV clinic visit, EHR electronic health record, FFQ food frequency questionnaire, GCT glucose challenge test, GGT gamma-glutamyl transferase, HOMA-IR homeostatic model assessment-insulin resistance, OGTT oral glucose tolerance test, SES socioeconomic status, TCS triclosan
^aMeasured among 300 expected GDM cases and 600 controls

ISSN: 1471-2393