Appendix 1.

Questionnaire information collected.

Factors	University of Illinois	University of California, Berkeley	Columbia University	Mount Sinai Medical Center	Cincinnati Children’s Hospital
Demographic information
Demographics	X	X	X	X	X
Occupation	X	X	X	X	X
Household income	X	X	X		X
Health and development
Reproductive history	X	X	X	X	X
Medical history	X	X	X	X	X
Medication use	X	X	X	X	X
Child sleep	X				X
Breast-feeding/child diet	X	X	X	X	X
Developmental milestones	X	X		X
Respiratory symptoms, illness		X	X	X	X
Exposure assessment
Housing characteristics	X	X	X	X	X
Pesticide exposure	X	X	X	X	X
Allergen exposure		X	X		X
House cleaning habits		X		X
Injury hazards					X
Home remedies	X	X	X	X
ETS	X	X	X	X	X
Household members	X	X	X	X	X
Household pets		X	X	X	X
Fish consumption	X		X	X	X
Social factors
Social support	X	X			X
Maternal depression	X	X			X
Psychological distress			X
Parenting stress	X				X
Marital conflict			X
Life events		X
Quality of life			X
Neighborhood quality			X		X
Sense of control					X
Neighborhood cohesion					X
Family resources					X
Material hardship		X	X		X
Acculturation	X	X
Immigration history	X	X			X
Childcare	X	X	X	X	X

ETS, environmental tobacco smoke.